Merge pull request zaproxy#8 from brunoqc/patch-1

Fix broken image in README

README.md

@@ -4,7 +4,7 @@ It has just been migrated from Google Code, so some of the wiki links may well b
 
 If you are using the latest version of ZAP  then you can browse and download addons from within ZAP by clicking on this button in the toolbar:
 
-![Image](https://raw.githubusercontent.com/wiki/zaproxy/zap-extensions/zap-screenshot-browse-addons.png)
+![Image](https://github.com/zaproxy/zap-extensions/wiki/images/zap-screenshot-browse-addons.png)
 
 You can also import add-ons you have downloaded manually via the "File / Load Add-on file..." menu option.