Backward compatibility with Rector

Author: ondrejmirtes

conf/config.neon

@@ -307,7 +307,7 @@ parametersSchema:
 tempDir: string()
 
 # internal parameters only for DerivativeContainerFactory
-additionalConfigFiles: listOf(string())
+additionalConfigFiles: arrayOf(string())
 generateBaselineFile: schema(string(), nullable())
 analysedPaths: listOf(string())
 composerAutoloaderProjectPaths: listOf(string())