Update default regexp documentation to match 8172d2c1.
Update default regexp documentation to match 8172d2c1.

[ci skip]

mr-dxdy/gitlabhq,icedwater/gitlabhq,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,dplarson/gitlabhq,icedwater/gitlabhq,shinexiao/gitlabhq,htve/GitlabForChinese,t-zuehlsdorff/gitlabhq,SVArago/gitlabhq,dreampet/gitlab,mr-dxdy/gitlabhq,dreampet/gitlab,darkrasid/gitlabhq,stoplightio/gitlabhq,martijnvermaat/gitlabhq,LUMC/gitlabhq,darkrasid/gitlabhq,jirutka/gitlabhq,shinexiao/gitlabhq,SVArago/gitlabhq,t-zuehlsdorff/gitlabhq,screenpages/gitlabhq,axilleas/gitlabhq,SVArago/gitlabhq,daiyu/gitlab-zh,jirutka/gitlabhq,LUMC/gitlabhq,allysonbarros/gitlabhq,shinexiao/gitlabhq,stoplightio/gitlabhq,screenpages/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,daiyu/gitlab-zh,mmkassem/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,openwide-java/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,darkrasid/gitlabhq,allysonbarros/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,htve/GitlabForChinese,stoplightio/gitlabhq,mr-dxdy/gitlabhq,iiet/iiet-git,screenpages/gitlabhq,jirutka/gitlabhq,openwide-java/gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,daiyu/gitlab-zh,axilleas/gitlabhq,LUMC/gitlabhq,htve/GitlabForChinese,martijnvermaat/gitlabhq,LUMC/gitlabhq,darkrasid/gitlabhq,icedwater/gitlabhq,allysonbarros/gitlabhq,dplarson/gitlabhq,axilleas/gitlabhq,shinexiao/gitlabhq,daiyu/gitlab-zh,martijnvermaat/gitlabhq,openwide-java/gitlabhq,screenpages/gitlabhq,icedwater/gitlabhq,mmkassem/gitlabhq,allysonbarros/gitlabhq,dreampet/gitlab,mr-dxdy/gitlabhq,htve/GitlabForChinese,martijnvermaat/gitlabhq,stoplightio/gitlabhq,openwide-java/gitlabhq,SVArago/gitlabhq