(fix) pref name

Signed-off-by: androidacy-user <opensource@androidacy.com>

Author: androidacy-user

app/src/main/java/com/fox2code/mmm/settings/SettingsActivity.java

@@ -197,7 +197,7 @@ public static class SettingsFragment extends PreferenceFragmentCompat implements
         @Override
         @SuppressWarnings("ConstantConditions")
         public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
-            String name = "mmm";
+            String name = "mmmx";
             Context context = MainApplication.getINSTANCE();
             MasterKey masterKey;
             PreferenceManager preferenceManager = getPreferenceManager();