docs: add missing leading dot when referencing the .gitlab-ci.yml file

README.md

@@ -9,7 +9,7 @@ or using the legacy [`include:project`](https://docs.gitlab.com/ee/ci/yaml/index
 
 ### Use as a CI/CD component
 
-Add the following to your `gitlab-ci.yml`:
+Add the following to your `.gitlab-ci.yml`:
 
 ```yaml
 include:
@@ -19,7 +19,7 @@ include:
 
 ### Use as a CI/CD template (legacy)
 
-Add the following to your `gitlab-ci.yml`:
+Add the following to your `.gitlab-ci.yml`:
 
 ```yaml
 include: