[Fix] CacheStore-API 修复 FactoryPriority 可以被实例化的问题;

[Fix] FactoryPriority 添加私有构造方法以阻止实例化;

ContentGrabbingJi-CacheStore-api/src/main/java/net/lamgc/cgj/bot/cache/FactoryPriority.java

@@ -52,5 +52,10 @@ public final class FactoryPriority {
      * <p> 优先级数值: 0
      */
     public final static int PRIORITY_LOWEST = 0;
-    
+
+    /**
+     * 该类不允许实例化.
+     */
+    private FactoryPriority() {}
+
 }