format fixed by ruff

Author: chetanr25

backend/app/ai/email_tools.py

@@ -14,7 +14,9 @@
 from app.email.service import email_service
 from app.email.templates_manager import template_manager
 
-FRONTEND_BASE_URL = os.getenv("FRONTEND_BASE_URL", "http://collegepathfinder.vercel.app")
+FRONTEND_BASE_URL = os.getenv(
+    "FRONTEND_BASE_URL", "http://collegepathfinder.vercel.app"
+)
 
 _current_session: Optional[ChatSession] = None