Merge branch 'zj-slash-commands-mattermost' into 'master'

Slash command for mattermost

Closes  #22540

## Does this MR meet the acceptance criteria?

- [x] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)


See merge request !7438

1 files changed, 1 insertions, 1 deletions

diff --git a/spec/services/chat_names/find_user_service_spec.rb b/spec/services/chat_names/find_user_service_spec.rb
index 5b885b2c657..51441e8f3be 100644
--- a/spec/services/chat_names/find_user_service_spec.rb
+++ b/spec/services/chat_names/find_user_service_spec.rb
@@ -13,7 +13,7 @@ describe ChatNames::FindUserService, services: true do
       context 'when existing user is requested' do
         let(:params) { { team_id: chat_name.team_id, user_id: chat_name.chat_id } }
 
-        it 'returns existing user' do
+        it 'returns the existing user' do
           is_expected.to eq(user)
         end