fixes broken links

docs/source/nbs/NotebookCollection.py

@@ -54,7 +54,7 @@
 
 # To use `NotebookCollection`, we pass a a list of paths, and optionally, ids for each notebook (uses paths by default).
 #
-# The only requirement is that cells whose output we want to extract must have tags, each tag then becomes a key in the notebook collection. For instructions on adding tags, [see this](https://jupyterbook.org/advanced/advanced.html#how-should-i-add-cell-tags-and-metadata-to-my-notebooks).
+# The only requirement is that cells whose output we want to extract must have tags, each tag then becomes a key in the notebook collection. For instructions on adding tags, [see this](https://papermill.readthedocs.io/en/latest/usage-parameterize.html).
 #
 # Extracted tables add colors to certain cells to identify the best and worst metrics. By default, it assumes that metrics are errors (smaller is better). If you are using scores (larger is better), pass `scores=True`, if you have both, pass a list of scores:
 

src/sklearn_evaluation/nb/NotebookCollection.py

@@ -25,7 +25,7 @@ class NotebookCollection(Mapping):
     """Compare output from a collection of notebooks
 
     To access output, notebooks must tag the cells (one tag per cell). For
-    instructions on tagging cells, `see this <https://jupyterbook.org/advanced/advanced.html#how-should-i-add-cell-tags-and-metadata-to-my-notebooks>`_.
+    instructions on tagging cells, `see this <https://papermill.readthedocs.io/en/latest/usage-parameterize.html>`_.
 
     :doc:`Click here <../user_guide/NotebookCollection>` to see the user guide.
 

src/sklearn_evaluation/nb/NotebookIntrospector.py

@@ -77,7 +77,7 @@ class NotebookIntrospector(Mapping):
     """Retrieve output from a notebook file with tagged cells.
 
     For instructions on tagging cells,
-    `see this <https://jupyterbook.org/advanced/advanced.html#how-should-i-add-cell-tags-and-metadata-to-my-notebooks>`_.
+    `see this <https://papermill.readthedocs.io/en/latest/usage-parameterize.html>`_.
 
     Notes
     -----