openapi-processor/openapi-processor-spring#198, fix enum check

Author: hauner

openapi-processor-core/src/main/kotlin/io/openapiprocessor/core/writer/java/StringEnumWriter.kt

@@ -107,6 +107,6 @@ open class StringEnumWriter(private val apiOptions: ApiOptions, private val gene
     }
 
     private fun isSupplier(): Boolean {
-        return apiOptions.enumType == "supplier"
+        return apiOptions.enumType == "framework"
     }
 }