Fix link to Gitlab CI example

Updated link to Gitlab example for clarity.

Author: schmijos

ruby_on_rails/configure_ci.md

@@ -4,7 +4,7 @@ At Renuo we **always** use a CI (Continuous Integration) system to test our appl
 that all the tests pass before building and releasing a new version through our CD system. Our projects use
 [SemaphoreCI](<https://semaphoreci.com/>).
 
-ℹ️ _Are you using **Gitlab**? Have a look at [this example](../gitlab_capybara_selenium.md) instead (and elaborate)._
+ℹ️ _Are you using **Gitlab**? Have a look at [this example](./gitlab_capybara_selenium.md) instead (and elaborate)._
 
 Before configuring the CI, you should already have a Git Repository with the code, a `bin/check` command to execute,
 and the main branches already pushed and ready to be tested.