### 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
print_identifier(p_parameter->identifier);
	if (p_parameter->datatype_specifier != nullptr) {
		push_text(" : ");
		print_type(p_parameter->datatype_specifier);
	}
	if (p_parameter->initializer != nullptr) {
		push_text(" = ");
		print_expression(p_parameter->initializer);
	}
}
void GDScriptParser::TreePrinter::print_preload(PreloadNode *p_preload) {
	push_text(R"(Preload ( ")");
	push_text(p_preload->resolved_path);
	push_text(R"(" )");
}
void GDScriptParser::TreePrinter::print_return(ReturnNode *p_return) {
	push_text("Return");
	if (p_return->return_value != nullptr) {
		push_text(" ");
		print_expression(p_return->return_value);
	}
	push_line();
}
void GDScriptParser::TreePrinter::print_self(SelfNode *p_self) {