[devhelp] flatpak: improve script

[Sébastien Wilmet <swilmet src gnome org>]

commit 2a0d7cdfffe26fffba0d7715dc2a23634d40ad2d
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu Jan 11 06:44:53 2018 +0100

    flatpak: improve script
    
    If the app is already installed, the first command will run fine but it
    doesn't update the app. So run in addition the update command.

 flatpak/3-install-app.sh |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/flatpak/3-install-app.sh b/flatpak/3-install-app.sh
index a499468..3b3ae2d 100755
--- a/flatpak/3-install-app.sh
+++ b/flatpak/3-install-app.sh
@@ -1,3 +1,4 @@
 #!/bin/sh
 
 flatpak install --user devhelp-repo org.gnome.Devhelp
+flatpak update --user org.gnome.Devhelp