Fixed broken image URL in README.md on theme Zish

themes/zish/README.md

@@ -2,7 +2,7 @@
 
 Zhishen Wen's simple fun theme =)
 
-![zish](https://raw2.github.com/wzhishen/oh-my-fish/master/themes/zish/zish_preview.png)
+![zish](https://raw.githubusercontent.com/bpinto/oh-my-fish/master/themes/zish/zish_preview.png)
 
 #### Left prompt
 User, host, abbreviated path, and git branch info
@@ -10,4 +10,4 @@ User, host, abbreviated path, and git branch info
 ####Right prompt
 Time and exit code
 
-Enjoy!
+Enjoy!