fix(docs): fixed small typo in readme.

Signed-off-by: Federico Di Pierro <[email protected]>

README.md

@@ -35,7 +35,7 @@ Therefore, running syscalls-bumper in your Github workflow is as easy as adding
  with:
  # Path to the libs repo.
  # No default. Mandatory.
- repo-root: 'true'
+ repo-root: 'libs'
 ```
 
 > __NOTE:__ Since we don't use annotated tags, one cannot use eg: falcosecurity/syscalls-bumper@v0, but only either exact tag name, branch name or commit hash.