Update URL for "VSync for Processing" contribution.

Author: prisonerjohn

contrib_generate/sources.conf

@@ -151,7 +151,7 @@
 105 \ http://paulhertz.net/ignocodelib/download/IgnoCodeLib.txt
 121 \ https://github.com/codeanticode/tablet/releases/download/latest/Tablet.txt
 136 \ http://www.extrapixel.ch/processing/gifAnimation/gifAnimation.txt
-139 \ http://erniejunior.github.io/VSync-for-Processing/download/VSync.txt
+139 \ http://ernestum.github.io/VSync-for-Processing/download/VSync.txt
 143 \ http://www.lagers.org.uk/processing/gamecontrol/GameControlPlus.txt
 167 \ http://www.lagers.org.uk/processing3/gamecontrol/GameControlPlus.txt
 168 \ http://transfluxus.github.io/SimpleHTTPServer/download/SimpleHTTPServer.txt