Apply suggestion to doc/user/project/clusters/serverless/index.md

doc/user/project/clusters/serverless/index.md

@@ -253,7 +253,7 @@ deploy:
 
 `Serverless.gitlab-ci.yml` is a template that allows customization.
 You can either import it with `include` parameter and use `extends` to
-customize your jobs, or you can inline entire template by choosing it
+customize your jobs, or you can inline the entire template by choosing it
 from **Apply a template** dropdown when editing the `.gitlab-ci.yml` file through
 the user interface.