provide correct shield url

Author: FelixAnthonisen

README.md

@@ -1,6 +1,6 @@
 # Java Variance
 
-![Build Status](https://img.shields.io/github/workflow/status/bldl/java-variance/maven) ![License](https://img.shields.io/github/license/bldl/java-variance)
+![Build Status](https://img.shields.io/github/actions/workflow/status/bldl/java-variance/maven.yml) ![License](https://img.shields.io/github/license/bldl/java-variance)
 
 ## Description
 
@@ -102,12 +102,6 @@ There are currently three annotations provided by this project: MyVariance, Cova
 
 MyVariance is the most customizable one, and allows you to experiment with different types of variance. With this one there are several parameters you can provide to specify what variance rules should apply:
 
-INVARIANT,
-COVARIANT,
-CONTRAVARIANT,
-BIVARIANT,
-SIDEVARIANT
-
 | Parameter  | Description                     | Possible values                                             |
 | ---------- | ------------------------------- | ----------------------------------------------------------- |
 | `variance` | Specifies which variance to use | COVARIANT, CONTRAVARIANT, INVARIANT, BIVARIANT, SIDEVARIANT |