Fix typos in rustc doc platform x86_64h-apple-darwin

Author: xzmeng

src/doc/rustc/src/platform-support/x86_64h-apple-darwin.md

@@ -20,7 +20,7 @@ will fail to load on machines that do not support this.
 
 It should support the full standard library (`std` and `alloc` either with
 default or user-defined allocators). This target is probably most useful when
-targetted via cross-compilation (including from `x86_64-apple-darwin`), but if
+targeted via cross-compilation (including from `x86_64-apple-darwin`), but if
 built manually, the host tools work.
 
 It is similar to `x86_64-apple-darwin` in nearly all respects, although the
@@ -49,7 +49,7 @@ suite seems to work.
 
 Cross-compilation to this target from Apple hosts should generally work without
 much configuration, so long as XCode and the CommandLineTools are installed.
-Targetting it from non-Apple hosts is difficult, but no moreso than targetting
+Targeting it from non-Apple hosts is difficult, but no more so than targeting
 `x86_64-apple-darwin`.
 
 When compiling C code for this target, either the "`x86_64h-apple-macosx*`" LLVM