Flash means swf bytecode (#7534)

The single word "Flash" could mean a few things

README.md

@@ -22,7 +22,7 @@ Haxe allows you to compile for the following targets:
  * PHP
  * Python 3
  * [NekoVM](http://nekovm.org/)
- * Flash
+ * Flash (SWF Bytecode)
  * ActionScript 3
 
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