[FEATURE] Docs: Add screenshot & configuration links

Make the documention link stand out a bit more and
add an example screenshot as this makes the package
more tangible for TYPO3 integrators.

Also refers more verbose to the necessary configuration.

Author: pixelbrackets

Documentation/Administration/Configuration/Index.rst

@@ -11,14 +11,16 @@ Set up API
 .. attention::
     Before using the DeepL API, you need to get an API key from your `DeepL Profile`_.
 
-Go to :guilabel:`Admin Tools > Settings > Extension Configuration`.
+Go to the :ref:`extension configuration <extensionConfiguration>`
+in :guilabel:`Admin Tools > Settings > Extension Configuration`.
 
 Open the settings for :guilabel:`wv_deepltranslate` and add your API key.
 
 .. figure:: /Images/Reference/configuration.png
     :alt: The Extension configuration settings showing two input fields for DeepL API key
 
-The extension is set up to auto-detect the corresponding DeepL API URL.
+The correct DeepL API endpoint for free or pro plans is auto-detected
+by the extension and the given API key format.
 
 .. _sitesetup:
 
@@ -81,8 +83,8 @@ The same option is available in the Select field as DeepL API Supported.
 Configure tables
 ----------------
 
-If not default set, you need to define the `l10n_mode` for the fields you want to
-have translatable by `wv_deepltranslate`.
+If not set by default, you need to define the `l10n_mode` for the fields you
+want to have translatable by `wv_deepltranslate`.
 
 See the :ref:`tableConfiguration<table configuration>` for details.
 

Documentation/Administration/Installation/Index.rst

@@ -26,10 +26,8 @@ You can download the extension using one of the following methods:
     You can always get current version from `TER`_ by downloading the zip
     version. Upload the file afterwards in the Extension Manager.
 
-and :ref:`configure <extensionConfiguration>` it.
-
-Within your own site configuration follow the instructions for
-:ref:`table configuration <tableConfiguration>`.
+The extension then needs to be :ref:`configured <configuration>`
+in order to display translation buttons in the desired languages.
 
 ..  _TER: https://extensions.typo3.org/extension/wv_deepltranslate
 

Documentation/Images/example-of-deepl-translation-selection-in-typo3-backend.png

@@ -21,6 +21,8 @@ for languages supported by [DeepL](https://www.deepl.com/de/docs-api/).
   * Synchronise glossaries to DeepL API
   * Translate content using your glossaries
 
+![Screenshot](Documentation/Images/example-of-deepl-translation-selection-in-typo3-backend.png)
+
 ## Early-Access-Programm
 
 Early access partners of DeepL Translate will benefit from exclusive access to all add-ons, developer preview versions, access to private GitHub repositories, priority support, logo placement and a backlink on the official website. You will also get access to the DeepL Translate version 5.0 announced for TYPO3 v13.
@@ -38,26 +40,29 @@ Find out more: https://www.web-vision.de/en/deepl.html
 
 Install with your favour:
 
-* [TER](https://extensions.typo3.org/extension/wv_deepltranslate/)
-* Extension Manager
-* composer
+* [Composer](https://packagist.org/packages/web-vision/wv_deepltranslate)
+* [TER / Extension Manager](https://extensions.typo3.org/extension/wv_deepltranslate/)
+* [Git](https://github.com/web-vision/wv_deepltranslate)
 
 We prefer composer installation:
 ```bash
 composer req web-vision/wv_deepltranslate
 ```
 
-|                  | URL                                                               |
-|------------------|-------------------------------------------------------------------|
-| **Repository:**  | https://github.com/web-vision/wv_deepltranslate                   |
-| **Read online:** | https://docs.typo3.org/p/web-vision/wv_deepltranslate/main/en-us/ |
-| **TER:**         | https://extensions.typo3.org/extension/wv_deepltranslate/         |
+The DeepL translation buttons are only displayed once you have set up the API
+and desired target languages. Read the documentation to find out how to do this.
+
+## Documentation
+
+Read online: https://docs.typo3.org/p/web-vision/wv_deepltranslate/main/en-us/
 
 ## Sponsors
+
 We appreciate very much the sponsorships of the developments and features in
 the DeepL Translate Extension for TYPO3.
 
 ### DeepL Glossary feature sponsored by
+
 * [Universität Osnabrück](https://www.uni-osnabrueck.de)
 * [Hochschule für Musik Würzburg](https://www.hfm-wuerzburg.de)
 * [Carl von Ossietzky Universität Oldenburg](https://uol.de/)