rename ci

.github/workflows/macos_aarch64.yml

@@ -1,4 +1,4 @@
-name: macOS
+name: macOS (arm64)
 
 on:
   pull_request:

.github/workflows/macos_x64.yml → .github/workflows/macos_x86_64.yml

@@ -1,4 +1,4 @@
-name: macOS
+name: macOS (x86_64)
 
 on:
   pull_request: