Update README.md

Author: infeo

README.md

@@ -4,8 +4,8 @@ macOS-specific implementations of [integrations-api](https://github.com/cryptoma
 
 ## Building
 
-Since this project involves JNI, you'll Java as well as Xcode build tools:
+Since this project involves JNI, you need Java as well as Xcode build tools:
 
 * JDK 17
 * Maven
-* XCode Command Line Tools (run `xcode-select --install`)
+* XCode Command Line Tools (run `xcode-select --install`)