doc: 修改 since 信息

1.0.0 之前新增的，其 since 修改为 1.0.0，统一以 1.0.0 作为初始版本

fix plusone/plusone-commons#30

src/main/java/xyz/zhouxy/plusone/commons/util/TreeBuilder.java

@@ -31,7 +31,7 @@ import javax.annotation.Nullable;
  * TreeBuilder
  *
  * @author <a href="http://zhouxy.xyz:3000/ZhouXY108">ZhouXY</a>
- * @since 1.0
+ * @since 1.0.0
  */
 public class TreeBuilder<T, TSubTree extends T, TIdentity> {
     private final Function<T, TIdentity> identityGetter;