Suppress dokka warnings for external classes exposing JS API to Kotlin

Usually MDN link in the class description is enough.

libraries/stdlib/js/src/kotlin/date.kt

@@ -3,6 +3,7 @@ package kotlin.js
 /**
  * Exposes the [Date API](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) to Kotlin.
  */
+@Suppress("NOT_DOCUMENTED")
 public external class Date() {
     public constructor(milliseconds: Number)
 

libraries/stdlib/js/src/kotlin/debug.kt

@@ -3,7 +3,8 @@ package kotlin.js
 /**
  * Exposes the [console API](https://developer.mozilla.org/en/DOM/console) to Kotlin.
  */
-external public interface Console {
+@Suppress("NOT_DOCUMENTED")
+public external interface Console {
     public fun dir(o: Any): Unit
     public fun error(vararg o: Any?): Unit
     public fun info(vararg o: Any?): Unit

libraries/stdlib/js/src/kotlin/json.kt

@@ -72,6 +72,7 @@ public fun Json.add(other: Json): Json {
 /**
  * Exposes the JavaScript [JSON object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON) to Kotlin.
  */
+@Suppress("NOT_DOCUMENTED")
 public external object JSON {
     public fun stringify(o: Any?): String
     public fun stringify(o: Any?, replacer: ((key: String, value: Any?) -> Any?)): String

libraries/stdlib/js/src/kotlin/promise.kt

@@ -21,6 +21,7 @@ import kotlin.internal.LowPriorityInOverloadResolution
 /**
  * Exposes the JavaScript [Promise object](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) to Kotlin.
  */
+@Suppress("NOT_DOCUMENTED")
 public open external class Promise<out T>(executor: (resolve: (T) -> Unit, reject: (Throwable) -> Unit) -> Unit) {
     @LowPriorityInOverloadResolution
     public open fun <S> then(onFulfilled: ((T) -> S)?): Promise<S>

libraries/stdlib/js/src/kotlin/regexp.kt

@@ -19,6 +19,7 @@ package kotlin.js
 /**
  * Exposes the JavaScript [RegExp object](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/RegExp) to Kotlin.
  */
+@Suppress("NOT_DOCUMENTED")
 public external class RegExp(pattern: String, flags: String? = definedExternally) {
 
     public fun test(str: String): Boolean
@@ -48,6 +49,7 @@ public fun RegExp.reset() {
 /**
  * Represents the return value of [RegExp.exec].
  */
+@Suppress("NOT_DOCUMENTED")
 public external interface RegExpMatch {
     public val index: Int
     public val input: String