Update metadata

README.md

@@ -11,13 +11,13 @@ pretty_name: Deep Dungeons and Dragons
 dataset_info:
   features:
   - name: thread_id
-    dtype: int
+    dtype: int64
   - name: message_id
-    dtype: int
+    dtype: int64
   - name: author_id
-    dtype: int
+    dtype: int64
   - name: author_num_posts
-    dtype: int
+    dtype: int64
   - name: message
     dtype: str
   - name: character