package/sway/Config.in: Add a help note about the default terminal

The default terminal used by sway is the foot terminal. Add a note in
the Config.in explaining that if a user is using the default sway config,
it is recommended to also enable the foot package.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/sway/Config.in

@@ -21,6 +21,10 @@ config BR2_PACKAGE_SWAY
 	select BR2_PACKAGE_XKEYBOARD_CONFIG # runtime
 	help
 	  i3-compatible Wayland compositor
+	  Note:
+	    The default sway config uses the foot package as the
+	    default terminal. If you plan on using the default
+	    config, it is recommended to select the foot package!
 
 	  https://github.com/swaywm/sway