Get rid of platform differences in Regex.find doc

kotlin-native/runtime/src/main/kotlin/kotlin/text/Regex.kt

@@ -156,6 +156,7 @@ public actual class Regex internal constructor(internal val nativePattern: Patte
      * @param startIndex An index to start search with, by default 0. Must be not less than zero and not greater than `input.length()`
      * @return An instance of [MatchResult] if match was found or `null` otherwise.
      * @throws IndexOutOfBoundsException if [startIndex] is less than zero or greater than the length of the [input] char sequence.
+     * @sample samples.text.Regexps.find
      */
     @Suppress("ACTUAL_FUNCTION_WITH_DEFAULT_ARGUMENTS")
     actual fun find(input: CharSequence, startIndex: Int = 0): MatchResult? {