Update tools/visit_webpage.py

Added import of re. Throughs error at the moment.

tools/visit_webpage.py

@@ -14,6 +14,7 @@ class VisitWebpageTool(Tool):
         try:
             import requests
             from markdownify import markdownify
+            import re
             from requests.exceptions import RequestException
 
             from smolagents.utils import truncate_content