add documentation for UDF Source URIs
add documentation for UDF Source URIs

ninneko/redash,akariv/redash,M32Media/redash,vishesh92/redash,rockwotj/redash,rockwotj/redash,44px/redash,akariv/redash,guaguadev/redash,44px/redash,M32Media/redash,crowdworks/redash,guaguadev/redash,chriszs/redash,EverlyWell/redash,crowdworks/redash,easytaxibr/redash,easytaxibr/redash,ninneko/redash,imsally/redash,vishesh92/redash,EverlyWell/redash,hudl/redash,guaguadev/redash,denisov-vlad/redash,M32Media/redash,EverlyWell/redash,amino-data/redash,useabode/redash,ninneko/redash,useabode/redash,hudl/redash,chriszs/redash,amino-data/redash,denisov-vlad/redash,useabode/redash,imsally/redash,44px/redash,getredash/redash,guaguadev/redash,ninneko/redash,akariv/redash,getredash/redash,denisov-vlad/redash,rockwotj/redash,alexanderlz/redash,denisov-vlad/redash,chriszs/redash,EverlyWell/redash,hudl/redash,moritz9/redash,44px/redash,stefanseifert/redash,getredash/redash,imsally/redash,hudl/redash,moritz9/redash,guaguadev/redash,vishesh92/redash,vishesh92/redash,easytaxibr/redash,getredash/redash,alexanderlz/redash,denisov-vlad/redash,stefanseifert/redash,useabode/redash,stefanseifert/redash,getredash/redash,stefanseifert/redash,M32Media/redash,crowdworks/redash,akariv/redash,amino-data/redash,easytaxibr/redash,stefanseifert/redash,alexanderlz/redash,easytaxibr/redash,crowdworks/redash,imsally/redash,akariv/redash,alexanderlz/redash,amino-data/redash,ninneko/redash,moritz9/redash,moritz9/redash,rockwotj/redash,chriszs/redash