package/vim: fix 'highlighting' typo

Found by codespell.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 900bf91d104d412853ccc6970cad752c3d217699)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/vim/Config.in

@@ -15,7 +15,7 @@ config BR2_PACKAGE_VIM_RUNTIME
 	bool "install runtime"
 	default y
 	help
-	  Install VIM runtime (syntax highlighing + macros).
+	  Install VIM runtime (syntax highlighting + macros).
 	  This option adds about 11MB of data to /usr/share/
 
 endif