Issue #3466990: README.md and readme.md both exist

README.md

-# Editor Advanced link
-
-## Table of contents
-
-- Introduction
-- Requirements
-- Installation
-- Configuration
-- Recommended modules
-- Maintainers
-
-## Introduction
-
-Enhances the link Dialog in CKEditor. Allows to define the following
-attributes:
-- `title`
-- `class`
-- `id`
-- `target`
-- `rel`
-
-For a full description of the module, visit the project page:\
-<https://www.drupal.org/project/editor_advanced_link>
-
-To submit bug reports and feature suggestions, or track changes:\
-<https://www.drupal.org/project/issues/editor_advanced_link>
-
-## Requirements
-
-This module requires no modules outside of Drupal Core.
-
-## Installation
-
-Install the module as you would normally install a contributed Drupal
-module. Visit [the documentation](https://www.drupal.org/docs/extending-drupal/installing-modules)
-for further information.
-
-## Configuration
-
-- Install and enable the module.
-- Go to the "Text formats and editor" admin page
-  (admin/config/content/formats).
-- If you are using CKEditor 5, click the "Advanced links" tab. There you will
-  see a list of attributes provided by this module that you can enable. For
-  example, "ARIA label", "ID", and "Open in new window."
-- If you are using CKEditor 4, configure your text format.
-  - If the "Limit allowed HTML tags and correct faulty HTML" filter is disabled
-    you don't have anything to do with this text format
-  - else, add the `title`, `class`, `id`, `target` and/or the `rel` attributes
-    to the "allowed HTML tags" field (only those whitelisted will show up in
-    the dialog)
-
-
-## Recommended modules
-
-- [Editor File upload](https://www.drupal.org/project/editor_file):\
-  Allows to create link to uploaded files in the text editor easily.
-- [Linkit](https://www.drupal.org/project/linkit):\
-  Provides an easy interface for internal and external linking with WYSIWYG
-  editors by using an autocomplete field.
-- [CKEditor Entity Link](https://www.drupal.org/project/ckeditor_entity_link):\
-  It is an alternative to Linkit that also provides an easy interface for
-  internal linking within the editor.
-
-## Maintainers
-
-Current maintainers:
-
-- [Edouard Cunibil (DuaelFr)](https://www.drupal.org/u/duaelfr)
-
-This project has been sponsored by:
-
-- [Happyculture](https://happyculture.coop) (paid contribution time)

readme.md

-## CONTENTS OF THIS FILE
-
-- Introduction
-- Requirements
-- Recommended modules
-- Installation
-- Configuration
-- Maintainers
-
-## INTRODUCTION
-
-Enhances the link Dialog in CKEditor.
-Allows to define the following attributes:
-
-- title
-- class
-- id
-- target
-- rel
-
-* For a full description of the module, visit the project page:
-  https://www.drupal.org/project/editor_advanced_link
-
-* To submit bug reports and feature suggestions, or track changes:
-  https://www.drupal.org/project/issues/editor_advanced_link
-
-## REQUIREMENTS
-
-This module requires no modules outside of Drupal core.
-
-## RECOMMENDED MODULES
-
-- Editor File upload (https://www.drupal.org/project/editor_file):
-  Allows to create link to uploaded files in the text editor easily.
-- Linkit (https://www.drupal.org/project/linkit):
-  Provides an easy interface for internal and external linking with WYSIWYG
-  editors by using an autocomplete field.
-- CKEditor Entity Link (https://www.drupal.org/project/ckeditor_entity_link):
-  It is an alternative to Linkit that also provides an easy interface for
-  internal linking within the editor.
-
-## INSTALLATION
-
-Install the module as you would normally install a contributed Drupal module.
-Visit https://www.drupal.org/node/1897420 for further information.
-
-## CONFIGURATION
-
-Install as usual then:
-
-    - go to the "Text formats and editor" admin page (admin/config/content/formats)
-    - configure your text format
-    - if the "Limit allowed HTML tags and correct faulty HTML" filter is disabled
-      you dont have anything to do with this text format
-    - else, add the "title", "class", "id", "target" and/or the "rel" attributes to
-      the "allowed HTML tags" field (only those whitelisted will show up in the dialog)
-
-## MAINTAINERS
-
-Current maintainers:
-
-- Edouard Cunibil (DuaelFr) - https://www.drupal.org/u/duaelfr
-
-This project has been sponsored by:
-
-- Happyculture (paid contribution time) - https://happyculture.coop