Update Hello-Hashlink for change on moving some fmt API to lib format

Author: yuxiaomao

Hello-HashLink.md

@@ -32,18 +32,20 @@ Now that you have [installed](https://github.com/HeapsIO/heaps/wiki/Installation
 ```
 -cp src
 -lib heaps
+-lib format
 -lib hlsdl
 -hl hello.hl
 -main Main
 ```
 
  - ``-cp src`` Tells haxe where to search for your code files
  - ``-lib heaps`` Tells haxe to import the heaps library
+ - ``-lib format`` Tells haxe to import the format library containing Hashlink API for native image conversion (it is recommanded to install the lib with `haxelib git format https://github.com/HaxeFoundation/format`)
  - ``-lib hlsdl`` Tells haxe to import the hlsdl rendering library
  - ``-hl hello.hl`` Tells haxe to compile to hashlink bytecode in the project directory
  - ``-main Main`` Tells haxe that Main.hx is your entry point
 
-The `-lib hlsdl` tells Heaps to compile with SDL/OpenGL support. If you are on Windows you can use `-lib hldx` instead.
+The `-lib hlsdl` tells Heaps to compile with SDL/OpenGL support. If you are on Windows you can also use `-lib hldx` or `-lib hldx -D dx12`.
 
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