Update strings to use single quotes

app/services/metrics/dashboard/update_dashboard_service.rb

@@ -21,20 +21,20 @@ module Metrics
       private
 
       def check_push_authorized(result)
-        return error(_(%q(You are not allowed to push into this branch. Create another branch or open a merge request.)), :forbidden) unless push_authorized?
+        return error(_('You are not allowed to push into this branch. Create another branch or open a merge request.'), :forbidden) unless push_authorized?
 
         success(result)
       end
 
       def check_branch_name(result)
-        return error(_(%q(There was an error updating the dashboard, branch name is invalid.)), :bad_request) unless valid_branch_name?
-        return error(_(%q(There was an error updating the dashboard, branch named: %{branch} already exists.)) % { branch: params[:branch] }, :bad_request) unless new_or_default_branch?
+        return error(_('There was an error updating the dashboard, branch name is invalid.'), :bad_request) unless valid_branch_name?
+        return error(_('There was an error updating the dashboard, branch named: %{branch} already exists.') % { branch: params[:branch] }, :bad_request) unless new_or_default_branch?
 
         success(result)
       end
 
       def check_file_type(result)
-        return error(_(%q(The file name should have a .yml extension)), :bad_request) unless target_file_type_valid?
+        return error(_('The file name should have a .yml extension'), :bad_request) unless target_file_type_valid?
 
         success(result)
       end