docs(logo): logo 居中

CHANGELOG.md

@@ -80,6 +80,7 @@
  docs | 修改文档 | [1982613](https://github.com/luoxue-victor/learn_webpack/commit/1982613)
  docs | 修改文档 | [bdc9a97](https://github.com/luoxue-victor/learn_webpack/commit/bdc9a97)
  eslint 文档 | 修改eslint 文档，并添加cwd分层 | [d23329b](https://github.com/luoxue-victor/learn_webpack/commit/d23329b)
+ logo | 修改logo | [b167240](https://github.com/luoxue-victor/learn_webpack/commit/b167240)
  readme | 17->18 | [6cc2e69](https://github.com/luoxue-victor/learn_webpack/commit/6cc2e69)
  readme | 保存文档 | [99c82c1](https://github.com/luoxue-victor/learn_webpack/commit/99c82c1)
  readme | 代码折叠默认展开 | [01e1ea8](https://github.com/luoxue-victor/learn_webpack/commit/01e1ea8)

README.md

@@ -1,6 +1,6 @@
 # webpack 工程师的自我修养
 
-<div style="text-align: center;">
+<div align="center">
 
 ![logo](public/asset/logo-mini2.png)
 

util/readme/header.md

@@ -1,6 +1,6 @@
 # webpack 工程师的自我修养
 
-<div style="text-align: center;">
+<div align="center">
 
 ![logo](public/asset/logo-mini2.png)