Update tools/visit_webpage.py

Added import to the RegEx module 're' using to remove the multiple line breaks (currently line 34). Otherwise the execution of the tool fails, because the module import is missing.

tools/visit_webpage.py

@@ -3,6 +3,7 @@ from smolagents.tools import Tool
 import requests
 import markdownify
 import smolagents
+import re
 
 class VisitWebpageTool(Tool):
     name = "visit_webpage"