[docs, nce] use macos handler, cross arm inst

Signed-off-by: lizzie <lizzie@eden-emu.dev>

src/dynarmic/src/dynarmic/CMakeLists.txt

@@ -330,7 +330,8 @@ elseif (APPLE)
             COMMAND_ERROR_IS_FATAL ANY
         )
         target_sources(dynarmic PRIVATE
-            backend/exception_handler_posix.cpp
+            backend/exception_handler_macos.cpp
+            backend/exception_handler_macos_mig.c
         )
     endif()
 elseif (UNIX AND NOT PLATFORM_HAIKU)