### Godot version

v4.0.stable.official [92bee43ad]

### System information

Steam OS Holo, Steam Deck

### Issue description

Using a `[br]` tag at the end of a line in a documentation comment adds an additional space at the beginning of the following line:

![image](https://user-images.githubusercontent.com/857660/236700815-c78a317f-cdf8-4f3c-8489-41f9559ffe6d.png)


### Steps to reproduce

The script below is what I used to generate the image above:

```gdscript
class_name Test
extends Node

## High-level description
##
## First line of detail.[br]
## Second line of detail.
```

Removing the space between `##` and `Second` doesn't change the output.

The only workaround I've found so far is to remove the linebreak after the `[br]` tag, but this makes the documentation comments harder to read in the editor:

```gdscript
class_name Test
extends Node

## High-level description
##
## First line of detail.[br]Second line of detail.
```

### Minimal reproduction project

N/A
bool could_continue = can_continue;
	
	can_break = true;
	can_continue = true;
	n_while->loop = parse_suite(R"("while" block)");
	n_while->loop->is_loop = true;
	complete_extents(n_while);
	
	can_break = could_break;
	can_continue = could_continue;
	return n_while;
}
GDScriptParser::ExpressionNode *GDScriptParser::parse_precedence(Precedence p_precedence, bool p_can_assign, bool p_stop_on_assign) {
	
	
	switch (current.type) {
		case GDScriptTokenizer::Token::PARENTHESIS_OPEN:
		case GDScriptTokenizer::Token::BRACE_OPEN:
		case GDScriptTokenizer::Token::BRACKET_OPEN:
			push_multiline(true);
			break;
		default:
			break; 
	}
	
	make_completion_context(COMPLETION_IDENTIFIER, nullptr);
	GDScriptTokenizer::Token token = current;
	GDScriptTokenizer::Token::Type token_type = token.type;
	if (token.is_identifier()) {