Remove wrong whitespace from URL and use HTTPS
Remove wrong whitespace from URL and use HTTPS

The whitespace caused the generated links to begin with a whitespace (e.g. `<a href=" http://owncloud.org/sync-clients/" target="_blank">`)

Additionally I switched the link to HTTPS.
whitekiba/server,whitekiba/server,whitekiba/server,jbicha/server,owncloud/core,IljaN/core,whitekiba/server,bluelml/core,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,lrytz/core,cernbox/core,lrytz/core,owncloud/core,bluelml/core,andreas-p/nextcloud-server,pollopolea/core,endsguy/server,pixelipo/server,bluelml/core,andreas-p/nextcloud-server,pollopolea/core,IljaN/core,endsguy/server,IljaN/core,whitekiba/server,pixelipo/server,Ardinis/server,nextcloud/server,xx621998xx/server,Ardinis/server,lrytz/core,michaelletzgus/nextcloud-server,sharidas/core,michaelletzgus/nextcloud-server,pmattern/server,owncloud/core,pmattern/server,cernbox/core,sharidas/core,xx621998xx/server,Ardinis/server,pmattern/server,endsguy/server,andreas-p/nextcloud-server,endsguy/server,owncloud/core,pollopolea/core,nextcloud/server,IljaN/core,Ardinis/server,cernbox/core,andreas-p/nextcloud-server,lrytz/core,bluelml/core,pmattern/server,Ardinis/server,pixelipo/server,lrytz/core,nextcloud/server,jbicha/server,endsguy/server,pmattern/server,michaelletzgus/nextcloud-server,IljaN/core,jbicha/server,pixelipo/server,pollopolea/core,phil-davis/core,sharidas/core,cernbox/core,xx621998xx/server,xx621998xx/server,cernbox/core,owncloud/core,bluelml/core,xx621998xx/server,jbicha/server,sharidas/core,jbicha/server,sharidas/core,pollopolea/core,nextcloud/server,pixelipo/server