Correct a couple of unbalanced parenthesis. (GH-10779)

diff --git a/Doc/library/crypt.rst b/Doc/library/crypt.rst
index dd62cb3..43d4b5b 100644
--- a/Doc/library/crypt.rst
+++ b/Doc/library/crypt.rst
@@ -91,7 +91,7 @@
    may be available on all platforms), or a full encrypted password
    including salt, as returned by this function.  If *salt* is not
    provided, the strongest method will be used (as returned by
-   :func:`methods`.
+   :func:`methods`).
 
    Checking a password is usually done by passing the plain-text password
    as *word* and the full results of a previous :func:`crypt` call,