MAINTAINERS: Correct minor mistakes on some file listings

There are a few entries where minor mistakes mean that we don't match up
with obviously expected files, correct those.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/amlogic/u200/MAINTAINERS b/board/amlogic/u200/MAINTAINERS
index f429c21..88c5038 100644
--- a/board/amlogic/u200/MAINTAINERS
+++ b/board/amlogic/u200/MAINTAINERS
@@ -4,7 +4,7 @@
 L:	u-boot-amlogic@groups.io
 F:	board/amlogic/u200/
 F:	configs/u200_defconfig
-F:	configs/bananapi-m2pro_defconfig
+F:	configs/bananapi-m2-pro_defconfig
 F:	configs/bananapi-m5_defconfig
 F:	configs/radxa-zero_defconfig
 F:	doc/board/amlogic/u200.rst