Rename "Slash commands" to "Quick actions"

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/27070

Deprecate "chat commands" in favor of "slash commands"

We looked for things like:

 - `slash commmand`
 - `slash_command`
 - `slash-command`
 - `SlashCommand`

1 files changed, 3 insertions, 3 deletions

diff --git a/app/services/merge_requests/update_service.rb b/app/services/merge_requests/update_service.rb
index 5c843a258fb..75a65aecd1a 100644
--- a/app/services/merge_requests/update_service.rb
+++ b/app/services/merge_requests/update_service.rb
@@ -7,7 +7,7 @@ module MergeRequests
       params.except!(:target_project_id)
       params.except!(:source_branch)
 
-      merge_from_slash_command(merge_request) if params[:merge]
+      merge_from_quick_action(merge_request) if params[:merge]
 
       if merge_request.closed_without_fork?
         params.except!(:target_branch, :force_remove_source_branch)
@@ -74,9 +74,9 @@ module MergeRequests
       end
     end
 
-    def merge_from_slash_command(merge_request)
+    def merge_from_quick_action(merge_request)
       last_diff_sha = params.delete(:merge)
-      return unless merge_request.mergeable_with_slash_command?(current_user, last_diff_sha: last_diff_sha)
+      return unless merge_request.mergeable_with_quick_action?(current_user, last_diff_sha: last_diff_sha)
 
       merge_request.update(merge_error: nil)