Add 2022 workshop links

Author: gfenoy

Readme.md

@@ -5,8 +5,10 @@
  * [2014](https://mapmint.github.io/workshops/MapMint/2014/index.html)
  * [2017](https://mapmint.github.io/workshops/MapMint/2017/index.html)
  * [2018](https://mapmint.github.io/workshops/MapMint/2018/index.html)
+ * [2022](https://mapmint.github.io/workshops/MapMint/2022/index.html)
 
 
 ## MapMint4ME workshop
 
  * [2019](https://mapmint.github.io/workshops/MapMint4ME/2019/index.html)
+ * [2022](https://mapmint.github.io/workshops/MapMint4ME/2022/index.html)