MAINTAINERS: update location of Python libraries

Commit 8f8fd9e introduced the python directory structure, but forgot
to update the path pattern on the MAINTAINERS file.

Signed-off-by: Cleber Rosa <[email protected]>

Author: clebergnu

MAINTAINERS

@@ -2001,7 +2001,7 @@ Python scripts
 M: Eduardo Habkost <[email protected]>
 M: Cleber Rosa <[email protected]>
 S: Odd fixes
-F: scripts/qmp/*
+F: python/qemu/*py
 F: scripts/*.py
 F: tests/*.py