Use relative path in doc
Created by: sonalkr132
Broken links which it fixes (in file):
*
doc/permissions/permissions.md
https://github.com/gitlabhq/gitlabhq/blob/master/doc/permissions/doc/workflow/add-user/add-user.md* doc/workflow/add-user/add-user.md
https://github.com/gitlabhq/gitlabhq/blob/master/doc/workflow/add-user/doc/permissions/permissions.md
-
doc/workflow/importing/import_projects_from_bitbucket.md
https://github.com/gitlabhq/gitlabhq/blob/master/doc/workflow/importing/doc/integration/bitbucket.md -
doc/workflow/protected_branches.md
https://github.com/gitlabhq/gitlabhq/blob/master/doc/workflow/doc/permissions/permissions.md
EDIT: Strikeouts because of changes in master later on.