correctly spell the gradle compile string

Author: MrChen1993

README.md

@@ -81,7 +81,7 @@ And make sure that you use the latest Kotlin version:
 Add dependencies (you can also add other modules that you need):
 
 ```groovy
-compile 'org.jetbrains.kotlinx:kotlinx-coroutines-corekotlinx-coroutines-core:0.22.4'
+compile 'org.jetbrains.kotlinx:kotlinx-coroutines-core:0.22.4'
 ```
 
 And make sure that you use the latest Kotlin version: