message: fixed typo, added GitHub link
diff: @@ -194,7 +194,7 @@ To fetch the entire project including these dependencies, clone the project
  using the ``--recursive`` flag as follows:
  ```bash
  -$ git clone --rescursive https://github.com/mitsuba-renderer/enoki
  +$ git clone --recursive https://github.com/mitsuba-renderer/enoki
  ```
  ## Documentation
  