fix README

Author: WezomDev

README.md

@@ -15,7 +15,7 @@ When creating an abstraction, we must implement all the methods and properties o
 The basis must be laid in an abstract class and brought to a final and typical concept in the classes of factories.
 
 `WebPluginInterface` has the core methods and properties that are key to working with most web plugins.
-Below is a list of these methods and properties. Then you can see [an example implementation](##usage-example).
+Below is a list of these methods and properties. Then you can see [an example implementation](https://github.com/WezomAgency/web-plugin-interface/blob/master/docs/index.md).
 
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