Fix typo (#13467)

Doc/library/sysconfig.rst

@@ -130,7 +130,7 @@ identifier.  Python currently uses eight paths:
    one may call this function and get the default value.
 
    If *scheme* is provided, it must be a value from the list returned by
-   :func:`get_path_names`.  Otherwise, the default scheme for the current
+   :func:`get_scheme_names`.  Otherwise, the default scheme for the current
    platform is used.
 
    If *vars* is provided, it must be a dictionary of variables that will update