### 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
clear();
}
void GDScriptParser::clear() {
	while (list != nullptr) {
		Node *element = list;
		list = list->next;
		memdelete(element);
	}
	head = nullptr;
	list = nullptr;
	_is_tool = false;
	for_completion = false;
	errors.clear();
	multiline_stack.clear();
	nodes_in_progress.clear();
}
void GDScriptParser::push_error(const String &p_message, const Node *p_origin) {
	
	
	panic_mode = true;
	
	if (p_origin == nullptr) {
		errors.push_back({ p_message, current.start_line, current.start_column });
	} else {
		errors.push_back({ p_message, p_origin->start_line, p_origin->leftmost_column });
	}
}
#ifdef DEBUG_ENABLED
void GDScriptParser::push_warning(const Node *p_source, GDScriptWarning::Code p_code, const Vector<String> &p_symbols) {