DEVELOPERS: add a trailing slash for libuv

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -195,7 +195,7 @@ F:	package/sqlcipher/
 F:	package/stress/
 
 N:	Asaf Kahlon <asafka7@gmail.com>
-F:	package/libuv
+F:	package/libuv/
 F:	package/python-jsonmodels/
 F:	package/python-reentry/
 F:	package/python-subprocess32/