Review comments

library/panic_unwind/src/lib.rs

@@ -56,8 +56,7 @@ cfg_if::cfg_if! {
         mod real_imp;
     } else {
         // Targets that don't support unwinding.
-        // - arch=wasm32
-        // - arch=wasm64
+        // - family=wasm
         // - os=none ("bare metal" targets)
         // - os=uefi
         // - os=espidf

library/std/src/sys/wasm/alloc.rs

@@ -1,4 +1,4 @@
-//! This is an implementation of a global allocator on the wasm platform when
+//! This is an implementation of a global allocator on wasm targets when
 //! emscripten is not in use. In that situation there's no actual runtime for us
 //! to lean on for allocation, so instead we provide our own!
 //!

library/std/src/thread/local.rs

@@ -479,7 +479,7 @@ mod lazy {
     }
 }
 
-/// On some platforms like wasm there's no threads, so no need to generate
+/// On some targets like wasm there's no threads, so no need to generate
 /// thread locals and we can instead just use plain statics!
 #[doc(hidden)]
 #[cfg(all(target_family = "wasm", not(target_feature = "atomics")))]