Fix links to Docker and PHPStan Docker image

Author: zonuexe

README.org

@@ -26,7 +26,7 @@ Emacs interface to [[https://github.com/phpstan/phpstan][PHPStan]], includes che
 *** For Flymake user
 The function for flymake will be implemented soon.  You do not have to depend on flycheck.
 *** Using Docker (phpstan/docker-image)
-Install [[https://www.docker.com/community-edition][Docker CE]] and [[https://github.com/phpstan/docker-image][phpstan/docker-image]](latest).
+Install [[https://www.docker.com/get-started][Docker]] and [[https://hub.docker.com/r/phpstan/phpstan][phpstan/phpstan image]].
 
 If you always use Docker for PHPStan, add the following into your ~.emacs~ file (~~/.emacs.d/init.el~)
 #+BEGIN_SRC emacs-lisp
@@ -51,6 +51,7 @@ If your project Composer relies on phpstan, you do not need to set anything.
          (phpstan-config-file . (root . "path/to/dir/phpstan-docker.neon"))
          (phpstan-level . 7))))
 #+END_SRC
+
 *** Using Composer
 Please install [[https://packagist.org/packages/phpstan/phpstan-shim][phpstan/phpstan-shim]] or [[https://packagist.org/packages/phpstan/phpstan][phpstan/phpstan]] package for each user environment or project by using [[https://getcomposer.org/download/][Composer]].
 
@@ -63,6 +64,7 @@ $ composer global require phpstan/phpstan-shim
 $ composer global remove psy/psysh nikic/php-parser
 $ composer global require phpstan/phpstan-shim psy/psysh
 #+END_SRC
+
 *** Using PHAR archive
 *NOTICE*: ~phpstan.el~ requires PHPStan **0.10+**.