Fix typo

app/src/main/java/chat/rocket/android/activity/MainActivity.java

@@ -197,7 +197,7 @@ public class MainActivity extends AbstractAuthedActivity implements MainContract
 
   @Override
   public void showUnreadCount(long roomsCount, int mentionsCount) {
-      toolbar.setUnreadBudge((int) roomsCount, mentionsCount);
+      toolbar.setUnreadBadge((int) roomsCount, mentionsCount);
   }
 
   @Override

rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/RoomToolbar.java

@@ -137,7 +137,7 @@ public class RoomToolbar extends Toolbar {
     userStatusImage.setVisibility(VISIBLE);
   }
 
-  public void setUnreadBudge(int numUnreadChannels, int numMentionsSum) {
+  public void setUnreadBadge(int numUnreadChannels, int numMentionsSum) {
     if (getNavigationIcon() == null) {
       return;
     }