Correct README indentation inside spans block

README.md

@@ -15,20 +15,6 @@ data_files:
 
 dataset_info:
   features:
-    - name: doc_id
-      dtype: int64
-    - name: doc_name
-      dtype: string
-    - name: sent_id
-      dtype: int64
-    - name: orig_ID
-      dtype: int64
-    - name: round
-      dtype: string
-    - name: annotator
-      dtype: string
-    - name: text
-      dtype: string
     - name: source_type
       dtype: string
     - name: spans