fixed URL so that it actually points to debug version of Flash Player (#2758)

Casks/flash-player-debugger.rb

@@ -1,9 +1,9 @@
 cask 'flash-player-debugger' do
   version '23.0.0.185'
-  sha256 'f1a7b29230bee1a8125d005d69becc9d6a63e7192291c5478b1f1f5e68d3e9b0'
+  sha256 '2d0faacfa637eef76c9c78f2b250e01f5f3d29cb4d09ea3bd493c0f70e3b9102'
 
   # macromedia.com was verified as official when first introduced to the cask
-  url "https://fpdownload.macromedia.com/pub/flashplayer/updaters/#{version.major}/flashplayer_#{version.major}_sa.dmg"
+  url "https://fpdownload.macromedia.com/pub/flashplayer/updaters/#{version.major}/flashplayer_#{version.major}_sa_debug.dmg"
   name 'Adobe Flash Player projector content debugger'
   homepage 'https://www.adobe.com/support/flashplayer/debug_downloads.html'