Fix documentation links for protected refs help

The documentation was moved in 65d6f873,
but the online help did not move with it. This saves the user from
having to click on another link just to get to the help page.

ee/app/views/projects/protected_branches/ee/_create_protected_branch.html.haml

@@ -12,7 +12,7 @@
                    data: { input_id: 'push_access_levels_attributes', default_label: 'Select' } })
   .form-text.text-muted
     Only groups that
-    = link_to 'have this project shared', help_page_path('workflow/share_projects_with_other_groups')
+    = link_to 'have this project shared', help_page_path('user/project/members/share_project_with_groups')
     can be added here
 
 = render 'projects/protected_branches/shared/create_protected_branch'

ee/app/views/projects/protected_tags/ee/_create_protected_tag.html.haml

@@ -6,7 +6,7 @@
                    data: { input_id: 'create_access_levels_attributes', default_label: 'Select' } })
   .form-text.text-muted
     Only groups that
-    = link_to 'have this project shared', help_page_path('workflow/share_projects_with_other_groups')
+    = link_to 'have this project shared', help_page_path('user/project/members/share_project_with_groups')
     can be added here
 
 = render 'projects/protected_tags/shared/create_protected_tag'