[gnome-tetravex] Use Unicode apostrophes in AppData

[Piotr Drąg <piotrdrag src gnome org>]

commit d5d102b67eaba24f4c19acf9311c0d384e8c19b1
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Wed Feb 6 20:34:52 2019 +0100

    Use Unicode apostrophes in AppData
    
    See https://developer.gnome.org/hig/stable/typography.html

 data/org.gnome.Tetravex.appdata.xml.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/org.gnome.Tetravex.appdata.xml.in b/data/org.gnome.Tetravex.appdata.xml.in
index 480e1fc..a9f2156 100644
--- a/data/org.gnome.Tetravex.appdata.xml.in
+++ b/data/org.gnome.Tetravex.appdata.xml.in
@@ -10,7 +10,7 @@
     <p>
       Each square piece has a number on each side. Position the pieces on the left
       side of the board so that the same numbers are next to each other. If the
-      numbers don't match, you can't put the piece there. Move quickly: you're
+      numbers don’t match, you can’t put the piece there. Move quickly: you’re
       being timed!
     </p>
     <p>