Apply suggestions from code review

Author: bitterpanda63

aikido_zen/vulnerabilities/path_traversal/unsafe_path_start.py

@@ -28,8 +28,8 @@
 
 def starts_with_unsafe_path(file_path, user_input):
     """Check if the file path starts with any dangerous paths and the user input."""
-    path_parsed = trim_leading_slashes(file_path.lower())
-    input_parsed = trim_leading_slashes(user_input.lower())
+    path_parsed = ensure_one_leading_slash(file_path.lower())
+    input_parsed = ensure_one_leading_slash(user_input.lower())
 
     for dangerous_start in dangerous_path_starts:
         if path_parsed.startswith(dangerous_start) and path_parsed.startswith(