Merge branch 'fixing-links' into 'master'

fixed links

@job I am trying to fix these links, since they work on the commit, but then they didn't work on the website when the commit was merged.

I tried changing them here, but I'm not sure if they'll work when merged. I tried to use localhost to test this, but it only works with www-gitlab-com

Thanks!

See merge request !1849

doc/workflow/importing/README.md

 # Migrating projects to a GitLab instance
 
-1. [Bitbucket](doc/workflow/import_projects_from_bitbucket.md)
-2. [GitHub](doc/workflow/import_projects_from_github.md)
-3. [GitLab.com](doc/workflow/import_projects_from_gitlab_com.md)
-4. [SVN](doc/workflow/migrating_from_svn.md)
+1. [Bitbucket](workflow/import_projects_from_bitbucket.md)
+2. [GitHub](workflow/import_projects_from_github.md)
+3. [GitLab.com](workflow/import_projects_from_gitlab_com.md)
+4. [SVN](workflow/migrating_from_svn.md)
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