Update changelog.md

Author: muammar

changelog.md

@@ -8,7 +8,7 @@
     - A deb package is now provided in this release.
     - The system tray will retry stopping the google cast before closing
       abruptly.
-    - The Mac OS X application now support models below the year 2010. See
+    - The Mac OS X application now supports models below the year 2010. See
       [#4](https://github.com/muammar/mkchromecast/issues/4).
 
 * mkchromecast (0.2.5) **released**: 2016/05/25