Link to discussions forum

docs/index.rst

@@ -10,10 +10,10 @@ datasette|
    :target: https://datasette.readthedocs.io/en/stable/changelog.html
 .. |Python 3.x| image:: https://img.shields.io/pypi/pyversions/datasette.svg?logo=python&logoColor=white
    :target: https://pypi.org/project/datasette/
-.. |Travis CI| image:: https://travis-ci.org/simonw/datasette.svg?branch=master
+.. |Travis CI| image:: https://travis-ci.org/simonw/datasette.svg?branch=main
    :target: https://travis-ci.org/simonw/datasette
 .. |License| image:: https://img.shields.io/badge/license-Apache%202.0-blue.svg
-   :target: https://github.com/simonw/datasette/blob/master/LICENSE
+   :target: https://github.com/simonw/datasette/blob/main/LICENSE
 .. |docker: datasette| image:: https://img.shields.io/badge/docker-datasette-blue
    :target: https://hub.docker.com/r/datasetteproject/datasette
 
@@ -27,6 +27,8 @@ Datasette is aimed at data journalists, museum curators, archivists, local gover
 
 More examples: https://github.com/simonw/datasette/wiki/Datasettes
 
+Support questions, feedback? Join our `GitHub Discussions forum <https://github.com/simonw/datasette/discussions>`__.
+
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