[fractal] Update changelog: keyboard shrotcuts were added

[Alexandre Franke <afranke src gnome org>]

commit 1619aa38406f4e47b530f1ff3792c1345cbc3e7b
Author: Baptiste Gelez <baptiste gelez xyz>
Date:   Wed May 15 17:41:23 2019 +0100

    Update changelog: keyboard shrotcuts were added

 fractal-gtk/res/org.gnome.Fractal.appdata.xml.in.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/fractal-gtk/res/org.gnome.Fractal.appdata.xml.in.in 
b/fractal-gtk/res/org.gnome.Fractal.appdata.xml.in.in
index 17f7f112..7ed8ca68 100644
--- a/fractal-gtk/res/org.gnome.Fractal.appdata.xml.in.in
+++ b/fractal-gtk/res/org.gnome.Fractal.appdata.xml.in.in
@@ -29,6 +29,7 @@
           <li>Network proxy support</li>
           <li>Typing notifications</li>
           <li>Badges are shown for operators and moderators</li>
+          <li>Keyboard shortcuts for easier navigation across rooms</li>
           <li>Better uploads:
             <ul>
               <li>Audio and video files are now tagged correctly</li>