[watchos] fix formatting

Author: vladimir-ea

compiler/rustc_target/src/spec/x86_64_apple_watchos_sim.rs

@@ -10,7 +10,8 @@ pub fn target() -> Target {
     Target {
         llvm_target,
         pointer_width: 64,
-        data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128".to_string(),
+        data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+            .to_string(),
         arch: "x86_64".to_string(),
         options: TargetOptions {
             max_atomic_width: Some(64),