slightly simplify Hearthstone

... to return the result immediately instead of re-assigning a variable.

Author: asolntsev

src/main/java/net/datafaker/providers/videogame/Hearthstone.java

@@ -31,12 +31,9 @@ public int battlegroundsScore() {
 
     public String standardRank() {
         String rank = resolve("games.hearthstone.rank");
-        if ("Legend".equals(rank)) {
-            rank = rank + " " + faker.random().nextInt(1, 65000);
-        } else {
-            rank = rank + " " + faker.random().nextInt(1, 10);
-        }
-        return rank;
+        return "Legend".equals(rank) ?
+            rank + " " + faker.random().nextInt(1, 65000) :
+            rank + " " + faker.random().nextInt(1, 10);
     }
 
     public String wildRank() {