Update defaults.yaml

Author: amjjbonvin

src/haddock/modules/sampling/rigidbody/defaults.yaml

@@ -856,7 +856,7 @@ separate:
   title: Separate molecules
   short: Translate molecules to separate them
   long: Translate molecules to separate them ensuring a minimum distance
-    that allows rotation without clashes
+    that allows rotations (controlled by the randrot parameter) without clashes
   group: 'sampling'
   explevel: easy
 randrot: