Update about.md (mmistakes#1981)

Just a minor addition, the word Hindi written in devnagri script (the script used for this language). Makes it easier to visually understand what script we are talking about.

Author: kulbhushanchand

docs/_pages/about.md

@@ -33,7 +33,7 @@ Minimal Mistakes is a flexible two-column Jekyll theme. Perfect for hosting your
 - Optional [header images](https://mmistakes.github.io/minimal-mistakes/docs/layouts/#headers), [custom sidebars](https://mmistakes.github.io/minimal-mistakes/docs/layouts/#sidebars), [table of contents](https://mmistakes.github.io/minimal-mistakes/docs/helpers/#table-of-contents), [galleries](https://mmistakes.github.io/minimal-mistakes/docs/helpers/#gallery), related posts, [breadcrumb links](https://mmistakes.github.io/minimal-mistakes/docs/configuration/#breadcrumb-navigation-beta), [navigation lists](https://mmistakes.github.io/minimal-mistakes/docs/helpers/#navigation-list), and more.
 - Commenting support (powered by [Disqus](https://disqus.com/), [Facebook](https://developers.facebook.com/docs/plugins/comments), Google+, [Discourse](https://www.discourse.org/), [utterances](https://utteranc.es/), static-based via [Staticman v1 and v2](https://staticman.net/), and custom).
 - [Google Analytics](https://www.google.com/analytics/) support.
-- UI localized text in English (default), Brazilian Portuguese (Português brasileiro), Chinese, Danish, Dutch, French (Français), German (Deutsch), Greek, Hindi, Hungarian, Indonesian, Italian (Italiano), Japanese, Korean, Nepali (Nepalese), Polish, Punjabi (ਪੰਜਾਬੀ), Romanian, Russian, Slovak, Spanish (Español), Swedish, Turkish (Türkçe), and Vietnamese.
+- UI localized text in English (default), Brazilian Portuguese (Português brasileiro), Chinese, Danish, Dutch, French (Français), German (Deutsch), Greek, Hindi (हिंदी), Hungarian, Indonesian, Italian (Italiano), Japanese, Korean, Nepali (Nepalese), Polish, Punjabi (ਪੰਜਾਬੀ), Romanian, Russian, Slovak, Spanish (Español), Swedish, Turkish (Türkçe), and Vietnamese.
 
 ## Demo Pages