Add Regex splitToSequence samples

libraries/stdlib/js/src/kotlin/text/regex.kt

@@ -211,6 +211,7 @@ public actual class Regex actual constructor(pattern: String, options: Set<Regex
      *
      * @param limit Non-negative value specifying the maximum number of substrings the string can be split to.
      * Zero by default means no limit is set.
+     * @sample samples.text.Regexps.splitToSequence
      */
     @SinceKotlin("1.5")
     @ExperimentalStdlibApi