Added docs for bitbucket_commit check type
Added docs for bitbucket_commit check type

Update to #1898

beeverycreative/BEEweb,Jaesin/OctoPrint,Salandora/OctoPrint,JackGavin13/octoprint-test-not-finished,Salandora/OctoPrint,foosel/OctoPrint,foosel/OctoPrint,JackGavin13/octoprint-test-not-finished,beeverycreative/BEEweb,Jaesin/OctoPrint,beeverycreative/BEEweb,foosel/OctoPrint,Jaesin/OctoPrint,beeverycreative/BEEweb,JackGavin13/octoprint-test-not-finished,foosel/OctoPrint,Salandora/OctoPrint,JackGavin13/octoprint-test-not-finished,Salandora/OctoPrint,Jaesin/OctoPrint