[ci skip] Fixed minor typo in docker documentation
[ci skip] Fixed minor typo in docker documentation

dreampet/gitlab,daiyu/gitlab-zh,t-zuehlsdorff/gitlabhq,ttasanen/gitlabhq,screenpages/gitlabhq,screenpages/gitlabhq,jrjang/gitlab-ce,stoplightio/gitlabhq,openwide-java/gitlabhq,jirutka/gitlabhq,dwrensha/gitlabhq,htve/GitlabForChinese,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,yatish27/gitlabhq,jirutka/gitlabhq,shinexiao/gitlabhq,larryli/gitlabhq,yatish27/gitlabhq,dplarson/gitlabhq,iiet/iiet-git,mr-dxdy/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,iiet/iiet-git,Datacom/gitlabhq,jrjang/gitlab-ce,jirutka/gitlabhq,martijnvermaat/gitlabhq,dwrensha/gitlabhq,icedwater/gitlabhq,dreampet/gitlab,yatish27/gitlabhq,LUMC/gitlabhq,shinexiao/gitlabhq,mmkassem/gitlabhq,duduribeiro/gitlabhq,iiet/iiet-git,htve/GitlabForChinese,dplarson/gitlabhq,jrjang/gitlabhq,LUMC/gitlabhq,dwrensha/gitlabhq,Datacom/gitlabhq,htve/GitlabForChinese,larryli/gitlabhq,mmkassem/gitlabhq,daiyu/gitlab-zh,duduribeiro/gitlabhq,SVArago/gitlabhq,t-zuehlsdorff/gitlabhq,icedwater/gitlabhq,dreampet/gitlab,htve/GitlabForChinese,martijnvermaat/gitlabhq,mrb/gitlabhq,mr-dxdy/gitlabhq,jrjang/gitlab-ce,allysonbarros/gitlabhq,Datacom/gitlabhq,SVArago/gitlabhq,dplarson/gitlabhq,allysonbarros/gitlabhq,icedwater/gitlabhq,icedwater/gitlabhq,Datacom/gitlabhq,jrjang/gitlabhq,jrjang/gitlabhq,darkrasid/gitlabhq,shinexiao/gitlabhq,shinexiao/gitlabhq,martijnvermaat/gitlabhq,daiyu/gitlab-zh,LUMC/gitlabhq,ttasanen/gitlabhq,darkrasid/gitlabhq,openwide-java/gitlabhq,daiyu/gitlab-zh,openwide-java/gitlabhq,darkrasid/gitlabhq,dwrensha/gitlabhq,ttasanen/gitlabhq,larryli/gitlabhq,yatish27/gitlabhq,screenpages/gitlabhq,mr-dxdy/gitlabhq,axilleas/gitlabhq,LUMC/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,jrjang/gitlab-ce,mrb/gitlabhq,stoplightio/gitlabhq,Soullivaneuh/gitlabhq,mrb/gitlabhq,Soullivaneuh/gitlabhq,t-zuehlsdorff/gitlabhq,openwide-java/gitlabhq,jrjang/gitlabhq,Soullivaneuh/gitlabhq,duduribeiro/gitlabhq,martijnvermaat/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,allysonbarros/gitlabhq,larryli/gitlabhq,mrb/gitlabhq,Soullivaneuh/gitlabhq,dplarson/gitlabhq,mr-dxdy/gitlabhq,ttasanen/gitlabhq,screenpages/gitlabhq,darkrasid/gitlabhq,SVArago/gitlabhq,mmkassem/gitlabhq,SVArago/gitlabhq,allysonbarros/gitlabhq,duduribeiro/gitlabhq,axilleas/gitlabhq