### Godot version

4.1.stable.flathub

### System information

Ubuntu 22

### Issue description

I'm converting my project and just caught the version 4.0 in _`"to work in Godot 4.0"`_ instead of current version. I'm not sure if it's intended but I feel like it would make more sense to have current version or just 4.x

![image](https://github.com/godotengine/godot/assets/14089949/03411389-c0c2-4527-8946-b1fdf348abe8)


### Steps to reproduce

Try converting a project to Godot 4 from Godot 3

### Minimal reproduction project

Default Godot 3 project opened with Godot 4
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected parameter name.)")) {
		return nullptr;
	}
	ParameterNode *parameter = alloc_node<ParameterNode>();
	parameter->identifier = parse_identifier();
	if (match(GDScriptTokenizer::Token::COLON)) {
		if (check((GDScriptTokenizer::Token::EQUAL))) {
			
			parameter->infer_datatype = true;
		} else {
			
			make_completion_context(COMPLETION_TYPE_NAME, parameter);
			parameter->datatype_specifier = parse_type();
		}
	}
	if (match(GDScriptTokenizer::Token::EQUAL)) {
		
		parameter->initializer = parse_expression(false);
	}
	complete_extents(parameter);
	return parameter;
}
GDScriptParser::SignalNode *GDScriptParser::parse_signal(bool p_is_static) {
	SignalNode *signal = alloc_node<SignalNode>();
	if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected signal name after "signal".)")) {
		complete_extents(signal);
		return nullptr;
	}
	signal->identifier = parse_identifier();
	if (check(GDScriptTokenizer::Token::PARENTHESIS_OPEN)) {