Merge branch 'source' of github.com:geocompr/geocompr.github.io into source

Author: Robinlovelace

README.md

@@ -1,3 +1,3 @@
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+  [![R build status](https://github.com/geocompr/geocompr.github.io/workflows/blogdown/badge.svg)](https://github.com/geocompr/geocompr.github.io/actions)
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