Add description to card metadata

IndicGLUE is a natural language understanding benchmark for Indian languages. It contains a wide
variety of tasks and covers 11 major Indian languages - as, bn, gu, hi, kn, ml, mr, or, pa, ta, te.

README.md

@@ -1,6 +1,6 @@
 ---
 title: IndicGLUE
-emoji: 🤗 
+emoji: 🤗
 colorFrom: blue
 colorTo: red
 sdk: gradio
@@ -8,10 +8,13 @@ sdk_version: 3.0.2
 app_file: app.py
 pinned: false
 tags:
-- evaluate
-- metric
+  - evaluate
+  - metric
+description: >-
+  IndicGLUE is a natural language understanding benchmark for Indian languages.
+  It contains a wide
+      variety of tasks and covers 11 major Indian languages - as, bn, gu, hi, kn, ml, mr, or, pa, ta, te.
 ---
-
 # Metric Card for IndicGLUE
 
 ## Metric description