fix typo in comment

core/src/main/java/org/elasticsearch/bootstrap/BootstrapInfo.java

@@ -67,7 +67,7 @@ public final class BootstrapInfo {
     // create a view of sysprops map that does not allow modifications
     // this must be done this way (e.g. versus an actual typed map), because
     // some test methods still change properties, so whitelisted changes must
-    // be reflected in this this view.
+    // be reflected in this view.
     private static final Dictionary<Object,Object> SYSTEM_PROPERTIES;
     static {
         final Dictionary<Object,Object> sysprops = System.getProperties();