Update README.md (Kotlin#3910)

Fix the documentation for the punctuation at core/jvm section.

README.md

@@ -36,7 +36,7 @@ suspend fun main() = coroutineScope {
  * [select] expression support and more.
 * [core/jvm](kotlinx-coroutines-core/jvm/) — additional core features available on Kotlin/JVM:
  * [Dispatchers.IO] dispatcher for blocking coroutines;
- * [Executor.asCoroutineDispatcher][asCoroutineDispatcher] extension, custom thread pools, and more.
+ * [Executor.asCoroutineDispatcher][asCoroutineDispatcher] extension, custom thread pools, and more;
  * Integrations with `CompletableFuture` and JVM-specific extensions.
 * [core/js](kotlinx-coroutines-core/js/) — additional core features available on Kotlin/JS:
  * Integration with `Promise` via [Promise.await] and [promise] builder;