chore: add the notice correct way

Author: rutviksavsani

src/wp-content/themes/twentytwentyone/assets/css/ie.css

@@ -19,6 +19,13 @@ Twenty Twenty-One WordPress Theme, (C) 2020 WordPress.org
 Twenty Twenty-One is distributed under the terms of the GNU GPL.
 */
 
+/*
+ * IMPORTANT: This file is only served on the frontend when `SCRIPT_DEBUG` is enabled;
+ * in most instances, the `style.min.css` file will be served. This theme uses SCSS for styles.
+ * After making changes to SCSS files, run `npm run build` in the theme directory to compile
+ * SCSS to CSS and regenerate the minified version.
+ */
+
 /**
  * SETTINGS
  * File-header..........The file header for the themes style.css file.

src/wp-content/themes/twentytwentyone/assets/css/ie.css.map

@@ -16,3 +16,10 @@ Tags: one-column, accessibility-ready, custom-colors, custom-menu, custom-logo,
 Twenty Twenty-One WordPress Theme, (C) 2020 WordPress.org
 Twenty Twenty-One is distributed under the terms of the GNU GPL.
 */
+
+/*
+ * IMPORTANT: This file is only served on the frontend when `SCRIPT_DEBUG` is enabled;
+ * in most instances, the `style.min.css` file will be served. This theme uses SCSS for styles.
+ * After making changes to SCSS files, run `npm run build` in the theme directory to compile
+ * SCSS to CSS and regenerate the minified version.
+ */

src/wp-content/themes/twentytwentyone/assets/sass/01-settings/file-header.scss

@@ -19,6 +19,13 @@ Twenty Twenty-One WordPress Theme, (C) 2020 WordPress.org
 Twenty Twenty-One is distributed under the terms of the GNU GPL.
 */
 
+/*
+ * IMPORTANT: This file is only served on the frontend when `SCRIPT_DEBUG` is enabled;
+ * in most instances, the `style.min.css` file will be served. This theme uses SCSS for styles.
+ * After making changes to SCSS files, run `npm run build` in the theme directory to compile
+ * SCSS to CSS and regenerate the minified version.
+ */
+
 /**
  * SETTINGS
  * File-header..........The file header for the themes style.css file.