Tests: fix unsupported OS name in IRGen/lto_autolink.swift

rdar://122672371

Author: xymus

test/IRGen/lto_autolink.swift

@@ -44,7 +44,7 @@ import AutolinkModuleMapLink
 #endif
 
 // UNSUPPORTED: OS=macosx && CPU=arm64
-// UNSUPPORTED: OS=iphoneos && CPU=arm64e
+// UNSUPPORTED: OS=ios && CPU=arm64e
 // UNSUPPORTED: OS=watchos && CPU=arm64_32
 // UNSUPPORTED: OS=linux-gnu && CPU=aarch64
 // UNSUPPORTED: CPU=wasm32