message: docs: link fix in CONTRIBUTING.md
diff: @@ -393,7 +393,7 @@ For example, the image referenced above actually lives in `superset-frontend/ima
  #### OS Dependencies
  -Make sure your machine meets the [OS dependencies](https://superset.apache.org/installation.html#os-dependencies) before following these steps.
  +Make sure your machine meets the [OS dependencies](https://superset.apache.org/docs/installation/installing-superset-from-scratch#os-dependencies) before following these steps.
  Ensure Python versions >3.7, Then proceed with:
  