Fix bors CI configuration

Author: eldruin

.github/bors.toml

@@ -16,15 +16,15 @@ status = [
     "CI (stable, s390x-unknown-linux-gnu)",
     "CI (stable, x86_64-unknown-linux-gnu)",
     "CI (stable, x86_64-unknown-linux-musl)",
-    "CI (stable, x86_64-apple-darwin)",
+    "CI-macOS (stable, x86_64-apple-darwin)",
 
     "CI (stable, --features=async-tokio, x86_64-unknown-linux-gnu)",
     "CI (stable, --features=mio-evented, x86_64-unknown-linux-gnu)",
 
     "CI (1.46.0, --features=async-tokio, x86_64-unknown-linux-gnu)",
     "CI (1.46.0, --features=mio-evented, x86_64-unknown-linux-gnu)",
     "CI (1.46.0, x86_64-unknown-linux-gnu)",
-    "CI (1.46.0, x86_64-apple-darwin)",
+    "CI-macOS (1.46.0, x86_64-apple-darwin)",
 
     "checks"
 ]