chore: update readme

README.md

@@ -13,7 +13,7 @@
 <a href="https://pypi.org/project/clip_server/"><img alt="PyPI - Python Version" src="https://img.shields.io/pypi/pyversions/clip_server?logo=python&logoColor=white&style=flat-square"></a>
 <a href="https://pypi.org/project/clip_server/"><img alt="PyPI" src="https://img.shields.io/pypi/v/clip_server?label=PyPI&logo=pypi&logoColor=white&style=flat-square"></a>
 <a href="https://slack.jina.ai"><img src="https://img.shields.io/badge/Slack-2.7k%2B-blueviolet?logo=slack&amp;logoColor=white&style=flat-square"></a>
-<a href="https://codecov.io/gh/jina-ai/clip-as-service"><img alt="Codecov branch" src="https://img.shields.io/codecov/c/github/jina-ai/clip-as-service/main?label=Codecov&logo=Codecov&logoColor=white&style=flat-square"></a>
+<a href="https://codecov.io/gh/jina-ai/clip-as-service"><img alt="Codecov branch" src="https://img.shields.io/codecov/c/github/jina-ai/clip-as-service/main?logo=Codecov&logoColor=white&style=flat-square"></a>
 </p>
 
 <!-- start elevator-pitch -->