[lightsoff/wip/kalev/symbolic-icon-name] Fix the name of the symbolic icon

[Kalev Lember <klember src gnome org>]

commit 360bfb9564f57eb10e4353ac04fac272c392d466
Author: Kalev Lember <klember redhat com>
Date:   Fri Sep 7 17:23:06 2018 +0200

    Fix the name of the symbolic icon

 .../hicolor/symbolic/apps/{lightsoff-symbolic => lightsoff-symbolic.svg}  | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
---
diff --git a/data/icons/hicolor/symbolic/apps/lightsoff-symbolic 
b/data/icons/hicolor/symbolic/apps/lightsoff-symbolic.svg
similarity index 100%
rename from data/icons/hicolor/symbolic/apps/lightsoff-symbolic
rename to data/icons/hicolor/symbolic/apps/lightsoff-symbolic.svg