Update overview.py

overview.py

@@ -167,7 +167,7 @@ dataset_comparison2 = pd.DataFrame(
     )
 
 table_html2 = dataset_comparison2.to_html(index=False, border=0)
-table_div2 = Div(NotStr(table_html2), style="margin: 40px;")
+table_div_2 = Div(NotStr(table_html2), style="margin: 40px;")
 
 dataset_sources = pd.DataFrame(
         {
@@ -279,8 +279,8 @@ both critical for effective LLM pre-training."""),
             P("By integrating the extensive reach of web data with the exceptional quality of curated sources, TxT360 is crafted to meet and surpass the rigorous standards required for state-of-the-art LLM pre-training."),
             H3("TxT360 combines both the web data and highly-curated sources, which none of the existing datasets have covered."),
             P("Table 1: The following table shows TxT360 and other well-known datasets on the coverage and size of data sources."),
-            table_div1,
-            table_div2,
+            table_div_1,
+            table_div_2,
             P("Table 2: Basic TxT360 Statistics."),
             table_div1,
         ),