fix(docs): ignore-modifiers clarification

Clarify the potential need of adding the ignore-modifiers setting for new sticky key behaviors.

docs/docs/behaviors/sticky-key.md

@@ -75,6 +75,8 @@ This configuration would apply to all sticky keys. This may not be appropriate i
 };
 ```
 
+If you combine multiple modifiers in a single key, like for example `&skq LS(LALT)`, you might need to add the `ignore-modifiers;` setting because it is not inherited from the default `&sq` behaviour.
+
 ### Advanced usage
 
 Sticky keys can be combined; if you tap `&sk LCTRL` and then `&sk LSHIFT` and then `&kp A`, the output will be ctrl+shift+a.