泛型实例修改

Author: imba-tjd

docs/java/basis/Java基础知识.md

@@ -316,7 +316,7 @@ class GeneratorImpl<T> implements Generator<T>{
 实现泛型接口，指定类型：
 
 ```java
-class GeneratorImpl<T> implements Generator<String>{
+class GeneratorImpl implements Generator<String>{
     @Override
     public String method() {
         return "hello";