DOC: Update link in user guide/style (#52304)

Update link in user guide/style

Author: allisonkwan

doc/source/user_guide/style.ipynb

@@ -1,6 +1,7 @@
 {
  "cells": [
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -29,7 +30,7 @@
     "  \n",
     "[styler]: ../reference/api/pandas.io.formats.style.Styler.rst\n",
     "[viz]: visualization.rst\n",
-    "[download]: https://nbviewer.ipython.org/github/pandas-dev/pandas/blob/main/doc/source/user_guide/style.ipynb\n",
+    "[download]: https://nbviewer.org/github/pandas-dev/pandas/blob/main/doc/source/user_guide/style.ipynb\n",
     "[format]: https://docs.python.org/3/library/string.html#format-specification-mini-language\n",
     "[formatfunc]: ../reference/api/pandas.io.formats.style.Styler.format.rst\n",
     "[formatfuncindex]: ../reference/api/pandas.io.formats.style.Styler.format_index.rst\n",