Merge branch '5.2' into 5.3

* 5.2:
  Fix CS in README files
  Fix markdown
  [HttpKernel] Fixes tests for PHP7.4+
  [Filesystem] fix readlink for Windows

Author: nicolas-grekas

HttpCache/Store.php

@@ -347,7 +347,7 @@ private function load(string $key): ?string
     {
         $path = $this->getPath($key);
 
-        return is_file($path) && false !== ($contents = file_get_contents($path)) ? $contents : null;
+        return is_file($path) && false !== ($contents = @file_get_contents($path)) ? $contents : null;
     }
 
     /**

README.md

@@ -8,8 +8,8 @@ enough to create full-stack frameworks, micro-frameworks or advanced CMS systems
 Resources
 ---------
 
-  * [Documentation](https://symfony.com/doc/current/components/http_kernel.html)
-  * [Contributing](https://symfony.com/doc/current/contributing/index.html)
-  * [Report issues](https://github.com/symfony/symfony/issues) and
-    [send Pull Requests](https://github.com/symfony/symfony/pulls)
-    in the [main Symfony repository](https://github.com/symfony/symfony)
+ * [Documentation](https://symfony.com/doc/current/components/http_kernel.html)
+ * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+ * [Report issues](https://github.com/symfony/symfony/issues) and
+   [send Pull Requests](https://github.com/symfony/symfony/pulls)
+   in the [main Symfony repository](https://github.com/symfony/symfony)