config: Adjust default payload length

config.cpp

@@ -114,7 +114,7 @@ Config::Config(const std::map<std::string, std::string> &map)
 
 	this->templateprefix = "{qswiki:";
 
-	this->max_payload_length = optional("max_payload_length", 10 * 1024 * 1024);
+	this->max_payload_length = optional("max_payload_length", 60 * 1024 * 1024);
 
 	ConfigVariableResolver resolver{this->configmap};
 	this->configVarResolver = resolver;