fix up main page

Author: ianhi

doc/index.md

@@ -1,14 +1,9 @@
-.. mpl-playback documentation master file, created by
-   sphinx-quickstart on Mon Jan 11 19:21:27 2021.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
-
 # Welcome to mpl-playback's documentation!
 
 A library to record and then playback user interactions with a Matplotlib
 figure. Also integrates with [sphinx-gallery](https://sphinx-gallery.github.io/stable/index.html)
 by providing a custom scraper so docs using widgets will render showing the interactions.
-See this in action in the :doc:`Gallery <gallery/index>`.
+See this in action in the {doc}`Gallery gallery:index>`.
 
 Inspired by discussions here: https://github.com/matplotlib/matplotlib/issues/19222