Add description to card metadata

This metric is used to assess performance on the Mathematics Aptitude Test of Heuristics (MATH) dataset.
It first canonicalizes the inputs (e.g., converting "1/2" to "\\frac{1}{2}") and then computes accuracy.

README.md

@@ -1,6 +1,6 @@
 ---
 title: Competition MATH
-emoji: 🤗 
+emoji: 🤗
 colorFrom: blue
 colorTo: red
 sdk: gradio
@@ -8,10 +8,15 @@ sdk_version: 3.0.2
 app_file: app.py
 pinned: false
 tags:
-- evaluate
-- metric
+  - evaluate
+  - metric
+description: >-
+  This metric is used to assess performance on the Mathematics Aptitude Test of
+  Heuristics (MATH) dataset.
+
+  It first canonicalizes the inputs (e.g., converting "1/2" to "\\frac{1}{2}")
+  and then computes accuracy.
 ---
-
 # Metric Card for Competition MATH
 
 ## Metric description