Update version of javadoc in readme.md

Author: CC007

README.md

@@ -4,6 +4,6 @@ In this repository you can find the documentation and wiki for the HeadsPluginAP
 Here is a link to the wiki, which will explain how to use HeadsPluginAPI:
 https://github.com/CC007/HeadsPluginAPI/wiki
 
-You can download the javadoc jarfile for this plugin here: https://cc007.github.io/HeadsPluginAPI/v1.7.0/HeadsPluginAPI-1.7.0-javadoc.jar
+You can download the javadoc jarfile for this plugin here: https://cc007.github.io/HeadsPluginAPI/v3.0.0/HeadsPluginAPI-3.0.0-javadoc.jar
 
-If you want to look through the javadoc online, click here: https://cc007.github.io/HeadsPluginAPI/v1.7.0/apidocs/
+If you want to look through the javadoc online, click here: https://cc007.github.io/HeadsPluginAPI/v3.0.0/apidocs/