[gedit] flatpak: add a comment

[Sébastien Wilmet <swilmet src gnome org>]

commit cb6949f89becae2d4aabc7060783afc1f28553c8
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Apr 26 15:04:17 2020 +0200

    flatpak: add a comment

 build-aux/flatpak/org.gnome.gedit.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/build-aux/flatpak/org.gnome.gedit.yml b/build-aux/flatpak/org.gnome.gedit.yml
index e75144f2d..28b5b2af1 100644
--- a/build-aux/flatpak/org.gnome.gedit.yml
+++ b/build-aux/flatpak/org.gnome.gedit.yml
@@ -12,6 +12,7 @@ finish-args:
   - "--share=ipc"
   - "--socket=x11"
   - "--socket=wayland"
+  # Needed at least for the integrated file browser plugin:
   - "--filesystem=host"
 
 build-options: