Improve docu

README.md

@@ -4,15 +4,21 @@ PHP application to create and verify a student card.
 
 ## Install:
 
-  git clone https://git.codeberg.org/digitalsouveraeneschule/studentcard.git
+```
+git clone https://git.steinbeis.schule/it-team/studidcard.git
+```
 
 ## Create keys
 
-  php genkey.php
+```
+php genkey.php
+```
 
 ## Configure
 
-  cd config
-  cp config.php.sample config.php
+```
+cd config
+cp config.php.sample config.php
+```
 
 edit config.php