Update .env.example

.env.example

@@ -7,7 +7,7 @@ ACTIONS_STEP_DEBUG=true
 
 # GitHub Actions inputs should follow `INPUT_<name>` format (case-sensitive).
 # Hyphens should not be converted to underscores!
-INPUT_MILLISECONDS=2400
+# INPUT_MILLISECONDS=2400
 
 # GitHub Actions default environment variables. These are set for every run of a
 # workflow and can be used in your actions. Setting the value here will override