bump EasyBuild version in docs to 5.2.0

Author: boegel

mkdocs.yml

@@ -169,7 +169,7 @@ extra:
     provider: google
     property: G-BLVCH6991S
   easybuild:
-    version: 5.1.2
+    version: 5.2.0
   # add links in bottom right
   social:
     - icon: fontawesome/brands/twitter