[hi] Add content/hi/case-studies/_index.md (#30733)

* Case studies added to `hi` folder

* Removed _index.md and added _index.html

* Update content/hi/case-studies/_index.html

Co-authored-by: Anubhav Vardhan <vardhananubhav@gmail.com>

* Update content/hi/case-studies/_index.html

Co-authored-by: Anubhav Vardhan <vardhananubhav@gmail.com>

Co-authored-by: Anubhav Vardhan <vardhananubhav@gmail.com>

content/hi/case-studies/_index.html

@@ -0,0 +1,9 @@
+---
+title: वैयक्तिक अध्ययन
+linkTitle: वैयक्तिक अध्ययन
+bigheader: कुबेरनेट्स उपयोगकर्ता वैयक्तिक अध्ययन
+abstract: उत्पादन में कुबेरनेट्स उपयोग करने वाले उपयोगकर्ताओं का एक संग्रह।
+layout: basic
+class: gridPage
+cid: caseStudies
+---