[gnome-music/wip/jfelder/do-not-build-grilo-plugins-help] flatpak: Do not build grilo-plugins documentation

[Jean Felder <jfelder src gnome org>]

commit f1df8ea58b2bc739a8d8548be0ad7003123af111
Author: Jean Felder <jfelder src gnome org>
Date:   Tue Mar 30 20:48:00 2021 +0200

    flatpak: Do not build grilo-plugins documentation

 org.gnome.Music.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/org.gnome.Music.json b/org.gnome.Music.json
index f1220f24a..42b38fe03 100644
--- a/org.gnome.Music.json
+++ b/org.gnome.Music.json
@@ -128,7 +128,8 @@
                              "-Denable-tracker=no",
                              "-Denable-tracker3=yes",
                              "-Denable-vimeo=no",
-                             "-Denable-youtube=no" ],
+                             "-Denable-youtube=no",
+                             "-Dhelp=no" ],
             "sources": [
                 {
                     "type": "git",