fix typo

doc/user/project/pages/getting_started_part_four.md

@@ -54,7 +54,7 @@ Of course, before building it, you had to install Jekyll in your computer.
 For that, you had to open your terminal and run `gem install jekyll`.
 Right? GitLab CI + GitLab Runner do the same thing. But you need to
 write in the `.gitlab-ci.yml` the script you want to run so
-GitLab Runner will do it for you. It looks more complicated then it
+GitLab Runner will do it for you. It looks more complicated than it
 is. What you need to tell the Runner:
 
 ```