Change composer call

README.md

@@ -11,7 +11,7 @@ The basic knowledge about TYPO3 and Composer is necessary for the installation.
 
 ```
 composer config repositories.slub-bison git https://git.slub-dresden.de/typo3/extensions/slub-bison.git
-composer require slub/bison „main-dev“
+composer require slub/bison:dev-main
 ```
 
 ## Backend Configuration