add topics dir to doc_styleguide
add topics dir to doc_styleguide

stoplightio/gitlabhq,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,htve/GitlabForChinese,axilleas/gitlabhq,axilleas/gitlabhq,htve/GitlabForChinese,dplarson/gitlabhq,dreampet/gitlab,darkrasid/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,jirutka/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,iiet/iiet-git,darkrasid/gitlabhq,axilleas/gitlabhq,dplarson/gitlabhq,htve/GitlabForChinese,axilleas/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,darkrasid/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,darkrasid/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,htve/GitlabForChinese,dreampet/gitlab