fixed missed renaming to StringSet

src/main/java/cz/cvut/fel/esw/nonblock/map/Main.java

@@ -53,7 +53,7 @@ public class Main {
         for (int i = 1; i < MAX_THREADS; i++) {
             for (int j = 0; j < REPEAT_BENCHMARK; j++) {
                 long time1 = test(i, new SynchronizedStringSet(10000));
-                //long time2 = test(i, new NonblockDictionary(10000));
+                //long time2 = test(i, new NonblockStringSet(10000));
             }
         }
     }