update readme

docs/10_📑_Description.md

 ## Requirements
 
-* PHP 7+
+* PHP 7+ (up to PHP 8.2)
 * Webserver (docs describe usage for Apache httpd)
 
 ## Features

docs/40_🖥️_Web_ui.md

@@ -19,6 +19,8 @@ Then you can open **/admin** in your webbrowser, eg.  `http(s)://servername/admi
 
 You get a list with all defined domains and its redirects + aliases.
 
+![Admin ui](images/admin_ui.png)
+
 In the table you see the columns
 
 * **Host** - the hostname/ FQDN that has a redirect rule

readme.md

@@ -8,3 +8,7 @@ Author: Axel Hahn; Institute for Medical Education; University of Bern
 📄 Source: <https://git-repo.iml.unibe.ch/iml-open-source/redirect-handler> \
 📜 License: GNU GPL 3.0 \
 📖 Docs: <https://os-docs.iml.unibe.ch/redirect-handler/> or see the [docs](./docs)
+
+- - -
+
+![Admin ui](docs/images/admin_ui.png)
\ No newline at end of file