DOC: Add missing link

mgeier · mgeier · commit 16878b7c04ee · 2018-12-07T21:04:01.000+01:00
diff --git a/doc/custom-formats.ipynb b/doc/custom-formats.ipynb
@@ -1,5 +1,14 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "nbsphinx": "hidden"
+   },
+   "source": [
+    "This notebook is part of the `nbsphinx` documentation: http://nbsphinx.readthedocs.io/."
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
