Update grammar in wasm-c-abi's compiler flag documentation

Co-authored-by: Jubilee <workingjubilee@gmail.com>

src/doc/unstable-book/src/compiler-flags/wasm-c-abi.md

@@ -3,8 +3,8 @@
 This option controls whether Rust uses the spec-compliant C ABI when compiling
 for the `wasm32-unknown-unknown` target.
 
-This makes it possible to be ABI-compatible with all other spec-compliant Wasm
-like Rusts `wasm32-wasip1`.
+This makes it possible to be ABI-compatible with all other spec-compliant Wasm targets
+like `wasm32-wasip1`.
 
 This compiler flag is perma-unstable, as it will be enabled by default in the
 future with no option to fall back to the old non-spec-compliant ABI.