[gedit-plugins/flake8] Update .gitlab-ci.yml

[Jordi Mas <jmas src gnome org>]

commit 544a5540346e94045e53b9389bcc3e93d28ced6b
Author: Jordi Mas <jmas softcatala org>
Date:   Thu May 16 08:36:44 2019 +0000

    Update .gitlab-ci.yml

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7afad3b..0d357fd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,7 +11,7 @@ build:
     - apt-get install valac libvte-2.91-dev libzeitgeist-2.0-dev gedit-dev -y
     - apt-get install python3 python3-pip python3-dbus python-dbus-dev python3-gi appstream -y
     - apt-get install meson ninja-build -y
-    - python3 -m pip3 install flake8
+    - python3 -m pip install flake8
 
   script:
     - cd plugins