the generated keys appear to be for JWT, not GPG

Author: Habbie

docs/setup/README.md

@@ -120,7 +120,7 @@ Please note that the `jc21/mariadb-aria:latest` image might have some problems o
 
 After the app is running for the first time, the following will happen:
 
-1. GPG keys will be generated and saved in the data folder
+1. JWT keys will be generated and saved in the data folder
 2. The database will initialize with table structures
 3. A default admin user will be created