Update HaxeTarget.md (HaxeFoundation#1056)

Fix typo in build_xml docs.

docs/build_xml/HaxeTarget.md

@@ -86,7 +86,7 @@ Here you can see the various file groups, which are enabled or not depending on
 ### Experimenting With Hxcpp Generated Code/Build.xml
 If you are using external cpp code, or using meta-data to inject xml into the build process, and you are getting a compile or link error, then it can be useful to run the hxcpp build tool without re-running haxe.  This lets you hand-edit the build file or generated c++ code until you get things to work.  Once you have solved the issues using this technique, then you can move the changes back into the injected/external code.
 
-First, compile haxe with '-v' flag.  This gives quite a bit of debug, but will include a like like this:
+First, compile haxe with '-v' flag.  This gives quite a bit of debug, but will include a line like this:
 ```
 haxelib run hxcpp Build.xml haxe -Dhaxe3="1" -Dhaxe_ver="4.000" -Dhxcpp_api_level="332" -Dsource-header="Generated by Haxe 4.0.0" -I"" -I"C:/Users/Hugh/dev/haxe/std/cpp/_std/" -I"C:/Users/Hugh/dev/haxe/std/"
 ```