docs: Clearer, less threatening instructions

fix_entity_names.py

@@ -91,7 +91,8 @@ def main():
         if confirm("Check 'debug.json' if the output looks reasonable then confirm"):
             json.dump(entities_object, entities_file)
             print("Replaced 'core.entity_registry' with the contents of debug.json")
-            print("PLEASE RESTART THE SERVER NOW")
+            print("First: Restart the server for changes to take affect")
+            print("Also: Clear your browser cache so the old entities disappear")
         else:
             print(
                 "Nothing changed. You could try to fix debug.json and replace the original file with it."