[ffi] Update some FfiNative docs to Native

The old FfiNatives have been deprecated for a while.

TEST=Only comments updated.

Change-Id: Ideb6e904841e5162d30df479e83b463b94682afe
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/332780
Auto-Submit: Daco Harkes <[email protected]>
Reviewed-by: Alexander Markov <[email protected]>
Commit-Queue: Alexander Markov <[email protected]>
Commit-Queue: Daco Harkes <[email protected]>

Author: dcharkes

pkg/vm/lib/target/vm.dart

@@ -172,7 +172,7 @@ class VmTarget extends Target {
           transitiveImportingDartFfi, diagnosticReporter, referenceFromIndex);
       logger?.call("Transformed ffi annotations");
 
-      // Transform @FfiNative(..) functions into FFI native call functions.
+      // Transform @Native(..) functions into FFI native call functions.
       // Pass instance method receivers as implicit first argument to the static
       // native function.
       // Transform arguments that extend NativeFieldWrapperClass1 to Pointer if

runtime/include/dart_api.h

@@ -3343,7 +3343,7 @@ DART_EXPORT Dart_Handle Dart_GetNativeSymbol(Dart_Handle library,
 /**
  * Sets the callback used to resolve FFI native functions for a library.
  * The resolved functions are expected to be a C function pointer of the
- * correct signature (as specified in the `@FfiNative<NFT>()` function
+ * correct signature (as specified in the `@Native<NFT>()` function
  * annotation in Dart code).
  *
  * NOTE: This is an experimental feature and might change in the future.