Fix typos and denting

doc/api/issues.md

@@ -329,7 +329,7 @@ Example response:
 ## Delete an issue
 
 Only for admins and project owners. Soft deletes the issue in question.
-If the operation is successful, a status code of `200` is returned. Any the case you cannot
+If the operation is successful, a status code `200` is returned. In case you cannot
 destroy this issue, or it is not present, code `404` is given.
 
 ```

doc/api/merge_requests.md

@@ -383,10 +383,9 @@ If an error occurs, an error number and a message explaining the reason is retur
 ## Delete a merge request
 
 Only for admins and project owners. Soft deletes the merge request in question.
-If the operation is successful, a status code of `200` is returned. Any the case you cannot
+If the operation is successful, a status code `200` is returned. In case you cannot
 destroy this merge request, or it is not present, code `404` is given.
 
-
 ```
 DELETE /projects/:id/merge_requests/:merge_request_id
 ```

spec/controllers/projects/issues_controller_spec.rb

@@ -201,7 +201,7 @@ describe Projects::IssuesController do
       let(:namespace) { create(:namespace, owner: owner) }
       let(:project)   { create(:project, namespace: namespace) }
 
-      before { sign_in owner }
+      before { sign_in(owner) }
 
       it "deletes the issue" do
         delete :destroy, namespace_id: project.namespace.path, project_id: project.path, id: issue.iid