Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -14,10 +14,10 @@ stages:
 include:
   - project: 'eclipse/aidge/gitlab_shared_files' 
     ref: 'main'
-    file: 
+    file:
       # choose which jobs to run by including the corresponding files.
       - '.gitlab/ci/ubuntu_cpp.gitlab-ci.yml'
-
+      
       - '.gitlab/ci/ubuntu_python.gitlab-ci.yml'
       - '.gitlab/ci/release/cibuildwheel_ubuntu.gitlab-ci.yml'