[3.9] Fix typo in comment (GH-26162) (GH-26165)

(cherry picked from commit de36737)


Co-authored-by: Ashwin Ramaswami <aramaswamis@gmail.com>

Automerge-Triggered-By: GH:iritkatriel

Author: miss-islington

Lib/gzip.py

@@ -516,7 +516,7 @@ def _add_read_data(self, data):
 
     def _read_eof(self):
         # We've read to the end of the file
-        # We check the that the computed CRC and size of the
+        # We check that the computed CRC and size of the
         # uncompressed data matches the stored values.  Note that the size
         # stored is the true file size mod 2**32.
         crc32, isize = struct.unpack("<II", self._read_exact(8))