Update website links in readme

Author: marijnh

README.md

@@ -1,15 +1,15 @@
 # codemirror [![NPM version](https://img.shields.io/npm/v/codemirror)](https://www.npmjs.org/package/codemirror)
 
-[ [**WEBSITE**](https://codemirror.net/6/) | [**DOCS**](https://codemirror.net/6/docs/ref/#codemirror) | [**ISSUES**](https://github.com/codemirror/codemirror.next/issues) | [**FORUM**](https://discuss.codemirror.net/c/next/) | [**CHANGELOG**](https://github.com/codemirror/basic-setup/blob/main/CHANGELOG.md) ]
+[ [**WEBSITE**](https://codemirror.net/) | [**DOCS**](https://codemirror.net/docs/ref/#codemirror) | [**ISSUES**](https://github.com/codemirror/codemirror.next/issues) | [**FORUM**](https://discuss.codemirror.net/c/next/) | [**CHANGELOG**](https://github.com/codemirror/basic-setup/blob/main/CHANGELOG.md) ]
 
 This package provides an example configuration for the
-[CodeMirror](https://codemirror.net/6/) code editor. The actual editor
+[CodeMirror](https://codemirror.net/) code editor. The actual editor
 is implemented in the various packages under the `@codemirror` scope,
 which this package depends on.
 
-The [project page](https://codemirror.net/6/) has more information, a
-number of [examples](https://codemirror.net/6/examples/) and the
-[documentation](https://codemirror.net/6/docs/).
+The [project page](https://codemirror.net/) has more information, a
+number of [examples](https://codemirror.net/examples/) and the
+[documentation](https://codemirror.net/docs/).
 
 This code is released under an
 [MIT license](https://github.com/codemirror/basic-setup/tree/main/LICENSE).