docs:update logo in README. (#360)

CHANGELOG.md

@@ -19,3 +19,4 @@
 - [feat:Add GitHub action of codecov.yml and update junit of metadata.](https://github.com/Tencent/spring-cloud-tencent/pull/344)
 - [Feature: optimize static metadata manager](https://github.com/Tencent/spring-cloud-tencent/pull/346)
 - [fix: shutdown thread pool before the container closes](https://github.com/Tencent/spring-cloud-tencent/pull/355)
+- [docs:update logo in README.](https://github.com/Tencent/spring-cloud-tencent/pull/360)

README-zh.md

@@ -1,4 +1,4 @@
-<img src="https://user-images.githubusercontent.com/4991116/176166888-9c8a4074-ba42-41b8-93db-d6e95b16656b.png" width="60%" height="60%"  alt="Spring-Cloud-Tencent-Logo"/>
+<img src="https://github.com/Tencent/spring-cloud-tencent/raw/2021.0/doc/logo/rectangle-white.png" width="60%" height="60%"  alt="Spring-Cloud-Tencent-Logo"/>
 
 [![Wiki](https://badgen.net/badge/icon/wiki?icon=wiki&label)](https://github.com/Tencent/spring-cloud-tencent/wiki)
 [![Build Status](https://github.com/Tencent/spring-cloud-tencent/actions/workflows/junit_test.yml/badge.svg)](https://github.com/Tencent/spring-cloud-tencent/actions/workflows/junit_test.yml)

README.md

@@ -1,4 +1,4 @@
-<img src="https://user-images.githubusercontent.com/4991116/176166888-9c8a4074-ba42-41b8-93db-d6e95b16656b.png" width="60%" height="60%"  alt="Spring-Cloud-Tencent-Logo"/>
+<img src="https://github.com/Tencent/spring-cloud-tencent/raw/2021.0/doc/logo/rectangle-white.png" width="60%" height="60%"  alt="Spring-Cloud-Tencent-Logo"/>
 
 
 [![Wiki](https://badgen.net/badge/icon/wiki?icon=wiki&label)](https://github.com/Tencent/spring-cloud-tencent/wiki)