Update README.md

Author: Evin1-

README.md

@@ -32,6 +32,7 @@ dependencies {
     // explicitly depend on RxJava's latest version for bug fixes and new features.
     // (see https://github.com/ReactiveX/RxJava/releases for latest 3.x.x version)
     implementation 'io.reactivex.rxjava3:rxjava:3.0.0'
+}
 ```
 
 * RxAndroid: <a href='http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22io.reactivex.rxjava3%22%20a%3A%22rxandroid%22'><img src='http://img.shields.io/maven-central/v/io.reactivex.rxjava3/rxandroid.svg'></a>