Doc: Fix grammar in PyErr_ResourceWarning (GH-18879) (GH-18963)

(cherry picked from commit fdcd53f)

Co-authored-by: Daniel Hahler <git@thequod.de>

Author: miss-islington

Doc/c-api/exceptions.rst

@@ -355,7 +355,7 @@ an error value).
 .. c:function:: int PyErr_ResourceWarning(PyObject *source, Py_ssize_t stack_level, const char *format, ...)
 
    Function similar to :c:func:`PyErr_WarnFormat`, but *category* is
-   :exc:`ResourceWarning` and pass *source* to :func:`warnings.WarningMessage`.
+   :exc:`ResourceWarning` and it passes *source* to :func:`warnings.WarningMessage`.
 
    .. versionadded:: 3.6