[quadrapassel] Use a Unicode apostrophe

[Piotr Drąg <piotrdrag src gnome org>]

commit 3fbdb5e7610ddff7f06791b6cb548a2fbc32192b
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Tue Dec 5 17:28:16 2017 +0100

    Use a Unicode apostrophe
    
    See https://developer.gnome.org/hig/stable/typography.html
    
    https://bugzilla.gnome.org/show_bug.cgi?id=772263

 data/quadrapassel.appdata.xml.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/quadrapassel.appdata.xml.in b/data/quadrapassel.appdata.xml.in
index bd59c43..532fdf9 100644
--- a/data/quadrapassel.appdata.xml.in
+++ b/data/quadrapassel.appdata.xml.in
@@ -15,7 +15,7 @@
       too high. As your score gets higher, you level up and the blocks fall faster.
     </_p>
     <_p>
-      If you're looking for a challenge, Quadrapassel allows you to increase the
+      If you’re looking for a challenge, Quadrapassel allows you to increase the
       initial speed of the blocks, or begin the game with partial blocks on some
       of the rows. Or, instead of allowing the blocks to fall randomly, it can
       select blocks that will be hard for you to place.