Fix url in `robots.txt`
Fix url in `robots.txt`

Their site has been broken for really long now.

Ref https://github.com/h5bp/html5-boilerplate/commit/4e5f438e1ea0d7e39179ba5cf799a8d326ba7cc3
gick/mobile-polymer-starter-2,SB-Technology-Holdings-International/Water,MyanmarAPI/data-entry-app,taranjeetsapra/polymer-starter-kit,SB-Technology-Holdings-International/WateringWebClient,kristianmandrup/polymer-starter-kit-plus,hbx5555/polymer-starter-kit,fousheezy/ncdc-events,proplanr/polymer-starter-kit,anthonybrown/polymer-starter-kit,LM450N/polymer-starter-kit,altereagle/polymer-starter-kit,1001genomes/admixture-map,jakemac53/polymer-starter-kit,vl4dt/polymer-starter-kit,bsparks/polymer-starter-kit,asternux/polymer-starter-kit,alexpaluzzi/polymer-starter-kit,Serious-Rage/poligomy,JnJSW/dttdata,Ex-ante-Labs/shopper.ninja,ndrd/nodrd-js,kenjitayama/polymer-starter-kit,Jelle-imitto/tools-polymer,gick/reveries-project,didrocks/site-julie,markovuksanovic/polymer-starter-kit,egohub/appdesign,gianluka79/First,victorgb6/id-questionary,tpgmartin/polymer-starter-kit,flaiker/polymer-starter-kit,semafloor/semafloor-test-alpha,paddeee/farrel,tecla5/site,stevenquiroa/thepolymerproject,SB-Technology-Holdings-International/WateringWebClient,mtusk/polymer-starter-kit,JnJSW/dttdata,markovuksanovic/polymer-starter-kit,finch0219/polymer-starter-kit,talee/flex,paul-jean/polymer-starter-kit,alexpaluzzi/polymer-starter-kit,liris-tweak/taaabs,samccone/polymer-starter-kit,TheFinestArtist/HandbellChoir-Web,SB-Technology-Holdings-International/WateringWebClient,patsissons/polymer-starter-kit,StatelessCat/psk-html-importer,soonick/polymer-starter-kit,Jelle-imitto/tools-polymer,dennisg/luminis-colleagues,bright-sparks/polymer-starter-kit,felixzapata/polymer-starter-kit,gertcuykens/polymer-starter-kit,semafloor/semafloor-test-alpha,LM450N/polymer-starter-kit,didrocks/polymer-starter-kit,elenadatsiuk/tinkersolomid,stefanoantonel/brainpower,FTG-003/polymer-starter-kit,timeu/polymer-starter-kit,simonfan/polymer-starter-kit,stevenquiroa/thepolymerproject,felixzapata/polymer-starter-kit,baberthal/polymer-starter-kit,Sykkro/penny-web,michaetto/f16,grebett/polymer-starter-kit,bsparks/polymer-starter-kit,DHSDevelopersClub/home-access-client,bird1235456/polymer-starter-kit,VandeurenGlenn/web-import,anusornc/polymer-starter-kit,be-cloud-js/odoo-dashboard,Joostvanderlaan/polymer-starter-kit-1,TheFinestArtist/HandbellChoir-Web,stefanoantonel/brainpower,SB-Technology-Holdings-International/Water,jamesthechamp/polymer-starter-kit,MyanmarAPI/data-entry-app,patsissons/polymer-starter-kit,newrocknj/polymer-starter-kit,patilharshali/polymer-starter-kit,abdonrd/polymer-starter-kit,OscaRoa/polymer-starter-kit,sebs/cat-toy,plusCubed/pluscubed-site,uvalib/wayfinding-kiosk,natabbotts/blogs.org.uk,noahlaux/polymer-starter-kit,jvkops/polymer-starter-kit,camargoanderso/polymer-starter-kit,stephenzsy/charon-frontend,ianholing/geowall-project,hocine-h/polymer-starter-kit,GNURub/polymer-starter-kit,felixzapata/polymer-starter-kit,WestchesterPublicLibrary/WPLreports,sebs/cat-toy,patilharshali/polymer-starter-kit,Sykkro/penny-web,WestchesterPublicLibrary/WPLreports,kristianmandrup/polymer-starter-kit,markovuksanovic/polymer-starter-kit,ndrd/nodrd-js,jimivdw/polymer-starter-kit,trendystore/store,trendystore/store,michaetto/f16,M4gn4tor/polymer-starter-kit,shingo-kumagai/polymer-starter-kit,SB-Technology-Holdings-International/WateringWebClient,tecla5/site,muhanadra/Portfolio,Jelle-imitto/tools-polymer,vl4dt/polymer-starter-kit,be-cloud-js/odoo-dashboard,hbx5555/polymer-starter-kit,jvkops/polymer-starter-kit,pathfinderstudios/polymer-starter-kit,StartPolymer/polymer-starter-kit-plus,WestchesterPublicLibrary/WPLreports,flaiker/polymer-starter-kit,camargoanderso/polymer-starter-kit,finch0219/polymer-starter-kit,StatelessCat/zealous-octo-wookie,paulcbetts/polymer-starter-kit,abdonrd/polymer-starter-kit,MontyNish/polymer-starter-kit,SB-Technology-Holdings-International/Water,DHSDevelopersClub/home-access-client,Ex-ante-Labs/pivot-ahead,uvalib/alderman-renew,elementron/elementron,natabbotts/blogs.org.uk,simonfan/polymer-starter-kit,mikaelharsjo/polymer-starter-kit,elenadatsiuk/tinkersolomid,alexpaluzzi/polymer-starter-kit,tpgmartin/polymer-starter-kit,bdnorg/tmi,hwangc/polymer-starter-kit,shauvik/polymer-starter-kit,Negashev/negash.ru,FaellCarvalho/Geo-Location,stevenquiroa/polymer-starter-kit,WestchesterPublicLibrary/WPLreports,hwangc/polymer-starter-kit,datalink747/polymer-starter-kit,HIROSN/polymer-starter-kit,bendroid/polymer-starter-kit,stevenquiroa/polymer-starter-kit,Nzaga/polymer-starter-kit,hliyan/polymer-starter-kit,stefanoantonel/ecofit,FaellCarvalho/Geo-Location,proplanr/polymer-starter-kit,gick/reveries-project,Sykkro/penny-web,newrocknj/polymer-starter-kit,michaetto/f16,paddeee/farrel,ragingwind/polymer-starter-kit,paul-jean/polymer-starter-kit,soonick/polymer-starter-kit,jdavidagudelo/polymerstarter,StatelessCat/zealous-octo-wookie,paul-jean/polymer-starter-kit,HIROSN/polymer-starter-kit,yi-jiayu/mahjong-calculator-v2,trendystore/store,shauvik/polymer-starter-kit,mikaelharsjo/polymer-starter-kit,gertcuykens/polymer-starter-kit,ianholing/geowall-project,Awarua-/Agilefant-Times-Polymer-Front-end,didrocks/site-julie,SB-Technology-Holdings-International/Water,grebett/polymer-starter-kit,jeffposnick/polymer-starter-kit,jamesthechamp/polymer-starter-kit,asternux/polymer-starter-kit,timeu/polymer-starter-kit,StartPolymer/polymer-starter-kit,grebett/polymer-starter-kit,MontyNish/polymer-starter-kit,neo0rabie/Portfolio,bright-sparks/polymer-starter-kit,hectorguo/polymer-starter-kit,paul-jean/foo-bar-element,robdodson/polymer-starter-kit,jdavidagudelo/polymerstarter,VandeurenGlenn/web-import,samccone/polymer-starter-kit,jeffposnick/polymer-starter-kit,lordoftheflies/mlm-portal,budnik/polymer-starter-kit,proplanr/polymer-starter-kit,taranjeetsapra/polymer-starter-kit,shingo-kumagai/polymer-starter-kit,SB-Technology-Holdings-International/Water,kristianmandrup/polymer-starter-kit,RoyKoh/Project-3,OscaRoa/polymer-starter-kit,datalink747/polymer-starter-kit,robdodson/polymer-starter-kit,elementron/elementron,egohub/appdesign,gick/mobile-polymer-starter-2,budnik/polymer-starter-kit,hliyan/polymer-starter-kit,gianluka79/First,Awarua-/Agilefant-Times-Polymer-Front-end,eafelix/polymer-starter-kit,liris-tweak/taaabs,andrefuller/PolymerTrailerViewer,lordoftheflies/mlm-portal,JnJSW/dttdata,muhanadra/Portfolio,mtusk/polymer-starter-kit,hocine-h/polymer-starter-kit,bird1235456/polymer-starter-kit,Negashev/i-kosmetolog,ek/polymer-starter-kit,M4gn4tor/polymer-starter-kit,Negashev/i-kosmetolog,baberthal/polymer-starter-kit,paulcbetts/polymer-starter-kit,pathfinderstudios/polymer-starter-kit,lordoftheflies/mlm-portal,uvalib/wayfinding-kiosk,anthonybrown/polymer-starter-kit,ragingwind/polymer-starter-kit,semafloor/semafloor-test-alpha,pedrogasg/polypdu,uvalib/alderman-renew,Ex-ante-Labs/shopper.ninja,jakemac53/polymer-starter-kit,Negashev/negash.ru,anusornc/polymer-starter-kit,Serious-Rage/poligomy,klarkc/polymer-loopback-starter-kit,didrocks/site-julie,pedrogasg/polypdu,StartPolymer/polymer-starter-kit-plus,Jelle-imitto/tools-polymer,RoyKoh/Project-3,gertcuykens/polymer-starter-kit,neo0rabie/Portfolio,Negashev/i-kosmetolog,altereagle/polymer-starter-kit,shawnhermans/polymer-starter-kit,kenjitayama/polymer-starter-kit,ek/polymer-starter-kit,StartPolymer/polymer-starter-kit,paddeee/farrel,andrefuller/PolymerTrailerViewer,FTG-003/polymer-starter-kit,StatelessCat/psk-html-importer,yi-jiayu/mahjong-calculator-v2,noahlaux/polymer-starter-kit,bdnorg/tmi,Joostvanderlaan/polymer-starter-kit-1,talee/flex,DHSDevelopersClub/home-access-client,LM450N/polymer-starter-kit,victorgb6/id-questionary,1001genomes/admixture-map,RoyKoh/Project-3,didrocks/polymer-starter-kit,Nzaga/polymer-starter-kit,gick/mobile-polymer-starter-2,GNURub/polymer-starter-kit,Ex-ante-Labs/pivot-ahead,m4h4n/polymer-starter-kit,bendroid/polymer-starter-kit,gick/reveries-project,hourliert/polymer-starter-kit,andrefuller/PolymerTrailerViewer,m4h4n/polymer-starter-kit,paul-jean/foo-bar-element,stefanoantonel/ecofit,didrocks/site-julie,fousheezy/ncdc-events,FaellCarvalho/Geo-Location,DHSDevelopersClub/home-access-client,ragingwind/polymer-starter-kit,elementron/elementron,dennisg/luminis-colleagues,plusCubed/pluscubed-site,stefanoantonel/ecofit,klarkc/polymer-loopback-starter-kit,hourliert/polymer-starter-kit,victorgb6/id-questionary,eafelix/polymer-starter-kit,jimivdw/polymer-starter-kit,klarkc/polymer-loopback-starter-kit,stephenzsy/charon-frontend,hectorguo/polymer-starter-kit,kristianmandrup/polymer-starter-kit-plus,Negashev/negash.ru,Serious-Rage/poligomy,pathfinderstudios/polymer-starter-kit,Jelle-imitto/tools-polymer,gianluka79/First,shawnhermans/polymer-starter-kit,stephenzsy/charon-frontend