Revising the function name related to user shortcut type.

Should add 's' into the name.

Bug: 148989018
Test: manual test
Change-Id: I46aadb80f4f28dc1794fc3313563c79be149e847

src/com/android/settings/accessibility/SharedPreferenceUtils.java

@@ -35,7 +35,7 @@ public final class SharedPreferenceUtils {
     }
 
     /** Returns a set of user shortcuts list to determine user preferred service shortcut. */
-    public static Set<String> getUserShortcutType(Context context) {
+    public static Set<String> getUserShortcutTypes(Context context) {
         return getSharedPreferences(context, ACCESSIBILITY_PERF)
                 .getStringSet(USER_SHORTCUT_TYPE, ImmutableSet.of());
     }