fix trailing whitespace

Author: wrongnull

Lib/zoneinfo/_tzpath.py

@@ -81,12 +81,12 @@ def _validate_tzfile_path(path, _base=_TEST_PATH):
         raise ValueError(
             "ZoneInfo key must not be an empty string"
         )
-    
+
     if os.path.isabs(path):
         raise ValueError(
             f"ZoneInfo keys may not be absolute paths, got: {path}"
         )
-    
+
     # We only care about the kinds of path normalizations that would change the
     # length of the key - e.g. a/../b -> a/b, or a/b/ -> a/b. On Windows,
     # normpath will also change from a/b to a\b, but that would still preserve