Apply suggestions from code review

Co-authored-by: marcobarilari <[email protected]>

Author: fcerpe

doc/contributing.md

@@ -2,7 +2,7 @@
 
 This is a common effort, please contribute actively to this docs.
 If something is unclear, incorrect, or incomplete; if something needs to be updated or if you found a new and cool feature, consider adding it yourself.
-Here's a few guidelines on how to do so.
+Here's a short guidelines on how to do so.
 
 
 ## Submit an issue (no git/github skills required)