Fix misprint in mechanism

Guides/ci.md

@@ -10,7 +10,7 @@ Tools and tips.
 
 Laminar installation automatically create a laminar user.
 
-To edit files in Laminar config folder (default `/var/lib/laminar/cfg/jobs`) without `sudo`, you can use the GNU/Linux group mecanism :
+To edit files in Laminar config folder (default `/var/lib/laminar/cfg/jobs`) without `sudo`, you can use the GNU/Linux group mechanism :
 
 ```sh
 sudo usermod -a -G laminar jovian