updated docs to specify override

action.yml

@@ -54,12 +54,14 @@ inputs:
     description: 'Whether to execute `git clean -ffdx && git reset --hard HEAD` before fetching'
     default: true
   filter:
-    description: 'Partially clone against a given filter.'
+    description: >
+      Partially clone against a given filter.
+      Overrides sparse-checkout if set.
     default: null
   sparse-checkout:
     description: >
       Do a sparse checkout on given patterns.
-      Each pattern should be separated with new lines
+      Each pattern should be separated with new lines.
     default: null
   sparse-checkout-cone-mode:
     description: >