mkdocs: Don't watch the README.md file anymore

The README.md file is not included in the documentation anymore, so
there is no need to watch it for changes.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

mkdocs.yml

@@ -125,4 +125,3 @@ plugins:
 watch:
   - "src"
   - CONTRIBUTING.md
-  - README.md