update readme with fixed stats

README.md

@@ -18,15 +18,16 @@ source_datasets: ccdv/govreport-summarization
 ## train info
 
 ```python
-RangeIndex: 8196 entries, 0 to 8195
+RangeIndex: 8200 entries, 0 to 8199
 Data columns (total 4 columns):
  #   Column             Non-Null Count  Dtype 
 ---  ------             --------------  ----- 
- 0   report             8196 non-null   string
- 1   summary            8196 non-null   string
- 2   input_token_len    8196 non-null   Int64 
- 3   summary_token_len  8196 non-null   Int64 
+ 0   report             8200 non-null   string
+ 1   summary            8200 non-null   string
+ 2   input_token_len    8200 non-null   Int64 
+ 3   summary_token_len  8200 non-null   Int64 
 dtypes: Int64(2), string(2)
+memory usage: 272.4 KB
 ```
 
 ## token length distribution (long-t5)