[skip ci]Fix typo in readme (#6198)

Signed-off-by: NXiangyu Wang <xiangyu.wang@zilliz.com>

README.md

@@ -171,7 +171,7 @@ Milvus [bootcamp](https://github.com/milvus-io/bootcamp/tree/new-bootcamp) are d
 
 Contributions to Milvus are welcome from everyone. See [Guidelines for Contributing](https://github.com/milvus-io/milvus/blob/master/CONTRIBUTING.md) for details on submitting patches and the contribution workflow. See our [community repository](https://github.com/milvus-io/community) to learn about our governance and access more community resources.
 
-### All contributions
+### All contributors
 
 <br><!-- Do not remove start of hero-bot --><br>
 <img src="https://img.shields.io/badge/all--contributors-138-orange"><br>

README_CN.md

@@ -175,7 +175,7 @@ Milvus 训练营能够帮助你了解向量数据库的操作及各种应用场
 
 欢迎向 Milvus 社区贡献你的代码。代码贡献流程或提交补丁等相关信息详见 [代码贡献准则](https://github.com/milvus-io/milvus/blob/master/CONTRIBUTING.md)。参考 [社区仓库](https://github.com/milvus-io/community) 了解社区管理准则并获取更多社区资源。
 
-### All contributions
+### All contributors
 
 <br><!-- Do not remove start of hero-bot --><br>
 <img src="https://img.shields.io/badge/all--contributors-138-orange"><br>