use absolute namespace for readability

phpstan.neon

@@ -22,5 +22,6 @@ parameters:
       - plugins.local/**/tests/*
       - plugins/**/test/*
       - plugins.local/**/test/*
+      - plugins.local/*/vendor/intervention/*
    paths:
       - .

plugins/af_readability/init.php

@@ -1,8 +1,8 @@
 <?php
-require "vendor/autoload.php";
+require_once __DIR__ . "/vendor/autoload.php";
 
-use andreskrey\Readability\Readability;
-use andreskrey\Readability\Configuration;
+use \andreskrey\Readability\Readability;
+use \andreskrey\Readability\Configuration;
 
 class Af_Readability extends Plugin {