MAINTAINERS: Update LED's active maintainer tree

Pavel's repo hasn't been used actively for quite some time.

Let's make it official.

Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Lee Jones <lee@kernel.org>

MAINTAINERS

@@ -12495,7 +12495,7 @@ M:	Pavel Machek <pavel@ucw.cz>
 M:	Lee Jones <lee@kernel.org>
 L:	linux-leds@vger.kernel.org
 S:	Maintained
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds.git
 F:	Documentation/devicetree/bindings/leds/
 F:	Documentation/leds/
 F:	drivers/leds/