[gerrit_util] Fix typo

Bug: b/348024314
Change-Id: I6419ad006535d2763b190d2e4f354816e3fd1c8f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/5651991
Commit-Queue: Allen Li <ayatane@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>

gerrit_util.py

@@ -1664,7 +1664,7 @@ class EmailRecord(TypedDict):
 def GetAccountEmails(host,
                      account_id='self',
                      *,
-                     authenticatator: Optional[Authenticator] = None
+                     authenticator: Optional[Authenticator] = None
                      ) -> Optional[List[EmailRecord]]:
     """Returns all emails for this account, and an indication of which of these
     is preferred.