Update README.md

## MATH (formatted)

Based on the *MATH* dataset by [Hendrycks et al.](https://github.com/hendrycks/math). Added a parsed **`answer`** field and reformatted **`solution`** with step-by-step text separated by double newlines (`\n\n`).

README.md

@@ -1,30 +1,34 @@
----
-dataset_info:
-  features:
-  - name: problem
-    dtype: string
-  - name: level
-    dtype: string
-  - name: solution
-    dtype: string
-  - name: type
-    dtype: string
-  - name: answer
-    dtype: string
-  splits:
-  - name: train
-    num_bytes: 6068742
-    num_examples: 7498
-  - name: test
-    num_bytes: 3786823
-    num_examples: 5000
-  download_size: 4892610
-  dataset_size: 9855565
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
-  - split: test
-    path: data/test-*
----
+---
+dataset_info:
+  features:
+  - name: problem
+    dtype: string
+  - name: level
+    dtype: string
+  - name: solution
+    dtype: string
+  - name: type
+    dtype: string
+  - name: answer
+    dtype: string
+  splits:
+  - name: train
+    num_bytes: 6068742
+    num_examples: 7498
+  - name: test
+    num_bytes: 3786823
+    num_examples: 5000
+  download_size: 4892610
+  dataset_size: 9855565
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/train-*
+  - split: test
+    path: data/test-*
+license: mit
+language:
+- en
+pretty_name: MATH
+---