fix: add macOS clarity

Author: uniyalabhishek

docs/build/tools/localnet.mdx

@@ -49,7 +49,7 @@ docker run -it --rm -p8544-8548:8544-8548 ghcr.io/oasisprotocol/sapphire-localne
 docker run -it --rm -p8544-8548:8544-8548 --platform linux/x86_64 ghcr.io/oasisprotocol/sapphire-localnet
 ```
 
-:::info Apple Silicon
+:::info Apple Silicon on macOS
 
 Rosetta must be **enabled** in Docker Desktop for `sapphire-localnet` to work
 on Apple Silicon Macs. QEMU emulation is not supported. Go to