[gnome-builder] doc: update stable URL

[Christian Hergert <chergert src gnome org>]

commit 58482b575afca18556c94bf35a64739c4950b680
Author: Christian Hergert <chergert redhat com>
Date:   Sun Apr 16 14:22:28 2017 -0700

    doc: update stable URL

 doc/installation.rst |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/doc/installation.rst b/doc/installation.rst
index 32202b9..11637ce 100644
--- a/doc/installation.rst
+++ b/doc/installation.rst
@@ -1,7 +1,7 @@
 
 .. _Installation:
 .. _Flatpak: https://flatpak.org
-.. _Stable: https://git.gnome.org/browse/gnome-apps-nightly/plain/gnome-builder.flatpakref?h=gnome-3-22
+.. _Stable: https://git.gnome.org/browse/gnome-apps-nightly/plain/gnome-builder.flatpakref?h=stable
 .. _Nightly: https://git.gnome.org/browse/gnome-apps-nightly/plain/gnome-builder.flatpakref
 .. _Software: https://wiki.gnome.org/Apps/Software
 .. _GNOME: https://gnome.org/
@@ -38,7 +38,7 @@ You can also use the command line to install Builder:
 
 .. code-block:: sh
 
-   $ flatpak install --user --from 
https://git.gnome.org/browse/gnome-apps-nightly/plain/gnome-builder.flatpakref?h=gnome-3-22
+   $ flatpak install --user --from 
https://git.gnome.org/browse/gnome-apps-nightly/plain/gnome-builder.flatpakref?h=stable
    $ flatpak run org.gnome.Builder
 
 **Nightly**