DOC: fix link from README to tutorial

README.md

@@ -33,6 +33,6 @@ and only obvious way to set the mask of an array.
 
 Documentation provided by attributes of `xp` are exposed in the `mxp`
 namespace and are accessible via `help`. For more information, please see
-[the tutorial](https://colab.research.google.com/drive/1LaZCK3jvnf40qEjWEhqhhc5e8IWy7vuo?usp=sharing).
+[the tutorial](https://mdhaber.github.io/marray/tutorial.html).
 
 [^1]: The MArray logo is a nod to NumPy, but MArray is not affiliated with the NumPy project.