Update doc/contributing.md

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

Author: fcerpe

doc/contributing.md

@@ -18,7 +18,6 @@ The actual text/scripts you find in this website are in this [repoistory](https:
 Each article/section of the website is a specific markdown (`.md`) file with (more or less) the same transparent name.
 
 If you're new to markdown, here's a quick [cheatsheet](https://www.markdownguide.org/cheat-sheet/).
-Just find the the markdown file you want to edit (eg the one for this section [contributing.md](https://github.com/cpp-lln-lab/CPP_LabGuide/blob/main/doc/contributing.md)) and click on `edit` (the pen icon) on the top right.
 
 
 ### Edit from github