docker/configuration.html.md: Fix syntax for link.
docker/configuration.html.md: Fix syntax for link.

docker provider:
* Invalid link (should be 'name:alias'): "db"
sni/vagrant,juiceinc/vagrant,philwrenn/vagrant,sax/vagrant,zsjohny/vagrant,dustymabe/vagrant,gpkfr/vagrant,philoserf/vagrant,fnewberg/vagrant,otagi/vagrant,doy/vagrant,bryson/vagrant,zsjohny/vagrant,chrisroberts/vagrant,TheBigBear/vagrant,miguel250/vagrant,evverx/vagrant,senglin/vagrant,marxarelli/vagrant,Chhunlong/vagrant,chrisroberts/vagrant,bdwyertech/vagrant,h4ck3rm1k3/vagrant,denisbr/vagrant,dharmab/vagrant,jmanero/vagrant,blueyed/vagrant,signed8bit/vagrant,fnewberg/vagrant,darkn3rd/vagrant,mkuzmin/vagrant,kalabiyau/vagrant,Endika/vagrant,theist/vagrant,TheBigBear/vagrant,invernizzi-at-google/vagrant,loren-osborn/vagrant,tknerr/vagrant,vamegh/vagrant,wangfakang/vagrant,bdwyertech/vagrant,Chhed13/vagrant,tschortsch/vagrant,apertoso/vagrant,ArloL/vagrant,jhoblitt/vagrant,senglin/vagrant,petems/vagrant,teotihuacanada/vagrant,jkburges/vagrant,ianmiell/vagrant,bdwyertech/vagrant,Avira/vagrant,PatOShea/vagrant,janek-warchol/vagrant,mwarren/vagrant,modulexcite/vagrant,tjanez/vagrant,genome21/vagrant,myrjola/vagrant,clinstid/vagrant,obnoxxx/vagrant,chrisvire/vagrant,miguel250/vagrant,cgvarela/vagrant,benh57/vagrant,kamazee/vagrant,sax/vagrant,juiceinc/vagrant,tomfanning/vagrant,modulexcite/vagrant,kamazee/vagrant,jkburges/vagrant,sideci-sample/sideci-sample-vagrant,gpkfr/vagrant,patrys/vagrant,invernizzi-at-google/vagrant,jhoblitt/vagrant,gpkfr/vagrant,bshurts/vagrant,kalabiyau/vagrant,MiLk/vagrant,apertoso/vagrant,benizi/vagrant,gajdaw/vagrant,sni/vagrant,theist/vagrant,justincampbell/vagrant,shtouff/vagrant,bheuvel/vagrant,bheuvel/vagrant,kalabiyau/vagrant,gitebra/vagrant,kamigerami/vagrant,PatrickLang/vagrant,dhoer/vagrant,pwnall/vagrant,clinstid/vagrant,lukebakken/vagrant,darkn3rd/vagrant,lukebakken/vagrant,philoserf/vagrant,Chhunlong/vagrant,petems/vagrant,bheuvel/vagrant,tomfanning/vagrant,benh57/vagrant,Avira/vagrant,chrisroberts/vagrant,aaam/vagrant,cgvarela/vagrant,mitchellh/vagrant,cgvarela/vagrant,tschortsch/vagrant,tbriggs-curse/vagrant,legal90/vagrant,petems/vagrant,otagi/vagrant,krig/vagrant,aneeshusa/vagrant,ianmiell/vagrant,wangfakang/vagrant,mkuzmin/vagrant,marxarelli/vagrant,mpoeter/vagrant,stephancom/vagrant,johntron/vagrant,chrisvire/vagrant,gajdaw/vagrant,juiceinc/vagrant,Avira/vagrant,tbarrongh/vagrant,wkolean/vagrant,bryson/vagrant,mitchellh/vagrant,loren-osborn/vagrant,lukebakken/vagrant,obnoxxx/vagrant,kalabiyau/vagrant,nickryand/vagrant,gajdaw/vagrant,tjanez/vagrant,taliesins/vagrant,genome21/vagrant,crashlytics/vagrant,tschortsch/vagrant,BlakeMesdag/vagrant,dhoer/vagrant,lonniev/vagrant,vamegh/vagrant,wkolean/vagrant,mwrock/vagrant,marxarelli/vagrant,doy/vagrant,johntron/vagrant,dhoer/vagrant,wangfakang/vagrant,apertoso/vagrant,dharmab/vagrant,ArloL/vagrant,evverx/vagrant,jean/vagrant,philoserf/vagrant,tbriggs-curse/vagrant,patrys/vagrant,rivy/vagrant,ferventcoder/vagrant,gbarberi/vagrant,jberends/vagrant,jmanero/vagrant,gbarberi/vagrant,blueyed/vagrant,jberends/vagrant,denisbr/vagrant,channui/vagrant,Endika/vagrant,rivy/vagrant,evverx/vagrant,senglin/vagrant,channui/vagrant,sni/vagrant,pwnall/vagrant,gpkfr/vagrant,ferventcoder/vagrant,signed8bit/vagrant,Chhed13/vagrant,tjanez/vagrant,tomfanning/vagrant,philwrenn/vagrant,lonniev/vagrant,crashlytics/vagrant,justincampbell/vagrant,signed8bit/vagrant,chrisvire/vagrant,chrisvire/vagrant,jkburges/vagrant,modulexcite/vagrant,stephancom/vagrant,jean/vagrant,tknerr/vagrant,jkburges/vagrant,doy/vagrant,apertoso/vagrant,johntron/vagrant,shtouff/vagrant,mwrock/vagrant,gitebra/vagrant,kamigerami/vagrant,myrjola/vagrant,carlosefr/vagrant,sni/vagrant,sax/vagrant,sideci-sample/sideci-sample-vagrant,teotihuacanada/vagrant,patrys/vagrant,stephancom/vagrant,gbarberi/vagrant,ArloL/vagrant,philoserf/vagrant,philwrenn/vagrant,vamegh/vagrant,jean/vagrant,dharmab/vagrant,jfchevrette/vagrant,bryson/vagrant,vamegh/vagrant,Sgoettschkes/vagrant,Chhed13/vagrant,nickryand/vagrant,gitebra/vagrant,crashlytics/vagrant,benh57/vagrant,TheBigBear/vagrant,teotihuacanada/vagrant,Sgoettschkes/vagrant,tknerr/vagrant,justincampbell/vagrant,muhanadra/vagrant,tbarrongh/vagrant,mwarren/vagrant,wangfakang/vagrant,aaam/vagrant,tbarrongh/vagrant,juiceinc/vagrant,h4ck3rm1k3/vagrant,wkolean/vagrant,bryson/vagrant,legal90/vagrant,fnewberg/vagrant,genome21/vagrant,sideci-sample/sideci-sample-vagrant,pwnall/vagrant,jberends/vagrant,mwrock/vagrant,clinstid/vagrant,mitchellh/vagrant,channui/vagrant,senglin/vagrant,Chhunlong/vagrant,iNecas/vagrant,theist/vagrant,jtopper/vagrant,shtouff/vagrant,krig/vagrant,aneeshusa/vagrant,krig/vagrant,mwrock/vagrant,taliesins/vagrant,benizi/vagrant,mkuzmin/vagrant,otagi/vagrant,stephancom/vagrant,bshurts/vagrant,gitebra/vagrant,bshurts/vagrant,tbriggs-curse/vagrant,kamazee/vagrant,rivy/vagrant,genome21/vagrant,rivy/vagrant,dustymabe/vagrant,dustymabe/vagrant,myrjola/vagrant,tbarrongh/vagrant,mpoeter/vagrant,crashlytics/vagrant,krig/vagrant,legal90/vagrant,mwarren/vagrant,aaam/vagrant,janek-warchol/vagrant,muhanadra/vagrant,nickryand/vagrant,Sgoettschkes/vagrant,benizi/vagrant,darkn3rd/vagrant,modulexcite/vagrant,wkolean/vagrant,chrisroberts/vagrant,tknerr/vagrant,myrjola/vagrant,PatrickLang/vagrant,loren-osborn/vagrant,kamigerami/vagrant,jberends/vagrant,miguel250/vagrant,benh57/vagrant,fnewberg/vagrant,lukebakken/vagrant,carlosefr/vagrant,tjanez/vagrant,h4ck3rm1k3/vagrant,jtopper/vagrant,dhoer/vagrant,Sgoettschkes/vagrant,ArloL/vagrant,denisbr/vagrant,carlosefr/vagrant,mitchellh/vagrant,invernizzi-at-google/vagrant,jhoblitt/vagrant,jtopper/vagrant,iNecas/vagrant,Endika/vagrant,jtopper/vagrant,MiLk/vagrant,bheuvel/vagrant,jmanero/vagrant,doy/vagrant,tomfanning/vagrant,blueyed/vagrant,h4ck3rm1k3/vagrant,taliesins/vagrant,kamazee/vagrant,tbriggs-curse/vagrant,BlakeMesdag/vagrant,sax/vagrant,TheBigBear/vagrant,muhanadra/vagrant,patrys/vagrant,aaam/vagrant,johntron/vagrant,bshurts/vagrant,teotihuacanada/vagrant,signed8bit/vagrant,MiLk/vagrant,muhanadra/vagrant,mkuzmin/vagrant,lonniev/vagrant,Endika/vagrant,kamigerami/vagrant,lonniev/vagrant,nickryand/vagrant,carlosefr/vagrant,gbarberi/vagrant,ianmiell/vagrant,petems/vagrant,janek-warchol/vagrant,PatOShea/vagrant,ferventcoder/vagrant,dharmab/vagrant,loren-osborn/vagrant,philwrenn/vagrant,PatOShea/vagrant,Chhunlong/vagrant,ferventcoder/vagrant,Chhed13/vagrant,PatrickLang/vagrant,dustymabe/vagrant,legal90/vagrant,otagi/vagrant,denisbr/vagrant,zsjohny/vagrant,iNecas/vagrant,aneeshusa/vagrant,jfchevrette/vagrant,jfchevrette/vagrant,miguel250/vagrant,jhoblitt/vagrant,PatrickLang/vagrant,taliesins/vagrant,BlakeMesdag/vagrant,bdwyertech/vagrant,mpoeter/vagrant,janek-warchol/vagrant,ianmiell/vagrant,mwarren/vagrant,aneeshusa/vagrant,tschortsch/vagrant,zsjohny/vagrant,benizi/vagrant,invernizzi-at-google/vagrant,darkn3rd/vagrant,Avira/vagrant,jmanero/vagrant,blueyed/vagrant,theist/vagrant,shtouff/vagrant,mpoeter/vagrant,cgvarela/vagrant,obnoxxx/vagrant,justincampbell/vagrant,jfchevrette/vagrant,pwnall/vagrant,jean/vagrant,PatOShea/vagrant,marxarelli/vagrant