feat: add import `html-validate/jest` as a shortcut to the jest matchers

docs/frameworks/jest.md

@@ -7,10 +7,10 @@ title: Usage with Jest
 
 `html-validate` comes with Jest support built-in.
 
-In you test import `matchers`:
+In you test import `html-validate/jest`:
 
 ```js
-import "html-validate/build/matchers";
+import "html-validate/jest";
 ```
 
 This makes all the custom matchers available.
@@ -50,6 +50,8 @@ If you need to override this (perhaps because the test-case isn't in the same fo
 expect("<p></i>").toHTMLValidate(null, "path/to/my-file.html");
 ```
 
+This can also be used to apply transformations to the markup.
+
 Additionally, the `root` configuration property can be used to skip loading from `.htmlvalidate.json` but remember to actually include the rules you need:
 
 ```js

package.json

@@ -29,6 +29,7 @@
     "bin",
     "build",
     "elements",
+    "jest.{js,d.ts}",
     "!*.snap",
     "!*.spec.d.ts",
     "!*.spec.js",