[Optimize] CacheStore-API, Framework-API, Event, Common 补充多个单元测试类的文档注释;

[Optimize] CacheKeyTest, CollectionUtilsTest, EventUtilsTest, FactoryInfoTest 在类文档添加测试所针对的类;

ContentGrabbingJi-framework-api/src/test/java/net/lamgc/cgj/bot/framework/util/CollectionUtilsTest.java

@@ -25,6 +25,9 @@ import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.CopyOnWriteArraySet;
 
+/**
+ * @see CollectionUtils
+ */
 public class CollectionUtilsTest {
 
     @Test