Fixed typo in links in README.md (#507)

Author: LeifSeute

README.md

@@ -34,11 +34,11 @@ KIMMDY has two exciting plugins in the making, which properly parameterize your
 for radicals using GrAPPa (Graph Attentional Protein Parametrization) and predict
 Hydrogen Atom Transfer (HAT) rates.
 
-Full installation instructions are available [here](https://grater-group.github.io/kimmdy/guide/how-to/install-ml-plugins.html)
+Full installation instructions are available [here](https://graeter-group.github.io/kimmdy/guide/how-to/install-ml-plugins.html)
 
 ## Documentation
 
-The documentation is available [here](https://grater-group.github.io/kimmdy/).
+The documentation is available [here](https://graeter-group.github.io/kimmdy/).
 
 ### Getting started