docs(licence): fix headings hierarchy (#30080)

site/content/docs/4.3/about/license.md

@@ -7,18 +7,18 @@ group: about
 
 Bootstrap is released under the MIT license and is copyright {{< year >}} Twitter. Boiled down to smaller chunks, it can be described with the following conditions.
 
-#### It requires you to:
+## It requires you to:
 
 * Keep the license and copyright notice included in Bootstrap's CSS and JavaScript files when you use them in your works
 
-#### It permits you to:
+## It permits you to:
 
 - Freely download and use Bootstrap, in whole or in part, for personal, private, company internal, or commercial purposes
 - Use Bootstrap in packages or distributions that you create
 - Modify the source code
 - Grant a sublicense to modify and distribute Bootstrap to third parties not included in the license
 
-#### It forbids you to:
+## It forbids you to:
 
 - Hold the authors and license owners liable for damages as Bootstrap is provided without warranty
 - Hold the creators or copyright holders of Bootstrap liable
@@ -26,7 +26,7 @@ Bootstrap is released under the MIT license and is copyright {{< year >}} Twitte
 - Use any marks owned by Twitter in any way that might state or imply that Twitter endorses your distribution
 - Use any marks owned by Twitter in any way that might state or imply that you created the Twitter software in question
 
-#### It does not require you to:
+## It does not require you to:
 
 - Include the source of Bootstrap itself, or of any modifications you may have made to it, in any redistribution you may assemble that includes it
 - Submit changes that you make to Bootstrap back to the Bootstrap project (though such feedback is encouraged)