Adjust min version

cjost1988 · cjost1988 · commit e7df3ed18c2f · 2020-04-22T20:07:11.000+02:00
diff --git a/README.md b/README.md
@@ -17,7 +17,7 @@ The plugin offers the following features:
 
 Requirements
 -----
-* Shopware >= 5.2.0
+* Shopware >= 5.6.3
 
 Installation
 ====
