[SPARK-12692][BUILD][YARN] Scala style: Fix the style violation (Space before "," or ":")

Fix the style violation (space before , and :).
This PR is a followup for #10643.

Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>

Closes #10686 from sarutak/SPARK-12692-followup-yarn.

yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnSparkHadoopUtil.scala

@@ -357,7 +357,7 @@ object YarnSparkHadoopUtil {
    *
    * @return The correct OOM Error handler JVM option, platform dependent.
    */
-  def getOutOfMemoryErrorArgument : String = {
+  def getOutOfMemoryErrorArgument: String = {
     if (Utils.isWindows) {
       escapeForShell("-XX:OnOutOfMemoryError=taskkill /F /PID %%%%p")
     } else {