Modify readme.

Author: miyabi

README.md

@@ -16,7 +16,7 @@ Download unity-replay-kit-bridge.unitypackage from link below:
 2.  Open the downloaded package by double-click or choose Assets menu > Import Package > Custom Package... to import plugin into your project.
 3.  Plugin files are imported into UnityReplayKitBridge folder.
 
-Notice: Swift-implemented version requires [unity-swift](https://github.com/miyabi/unity-swift).
+**Notice**: Swift-implemented version requires [unity-swift](https://github.com/miyabi/unity-swift).
 
 ## Example