Merge pull request #1 from brentru/readthedocs-badge

added rtd badge

Author: tannewt

README.rst

@@ -3,9 +3,7 @@ Introduction
 ============
 
 .. image:: https://readthedocs.org/projects/adafruit-circuitpython-avrprog/badge/?version=latest
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     :target: https://circuitpython.readthedocs.io/projects/avrprog/en/latest/
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     :alt: Documentation Status
 
 .. image :: https://img.shields.io/discord/327254708534116352.svg