Update README.md

README.md

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 ##[Brand](https://github.com/phodal/brand)
 
-[![Phodal's Idea](http://brand.phodal.com/shields/idea.svg)](http://ideas.phodal.com/)
-[![Phodal's Article](http://brand.phodal.com/shields/article.svg)](https://www.phodal.com/)
-[![Phodal's Works](http://brand.phodal.com/shields/works.svg)](https://www.phodal.com/)
-[![Phodal's Design](http://brand.phodal.com/shields/design.svg)](https://www.phodal.com/)
+[![Phodal's Idea](http://brand.phodal.com/shields/idea-small.svg)](http://ideas.phodal.com/)
+[![Phodal's Article](http://brand.phodal.com/shields/article-small.svg)](https://www.phodal.com/)
+[![Phodal's Works](http://brand.phodal.com/shields/works-small.svg)](https://www.phodal.com/)
+[![Phodal's Design](http://brand.phodal.com/shields/design-small.svg)](https://www.phodal.com/)
 
 ##[Growth](https://github.com/phodal/growth)