### 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
} else if (head->has_member(first)) {
		class_names = p_qualified_name.split("::");
		GDScriptParser::ClassNode::Member member = head->get_member(first);
		if (member.type == GDScriptParser::ClassNode::Member::CLASS) {
			result = member.m_class;
		}
	}
	
	for (int i = 1; result != nullptr && i < class_names.size(); i++) {
		String current_name = class_names[i];
		GDScriptParser::ClassNode *next = nullptr;
		if (result->has_member(current_name)) {
			GDScriptParser::ClassNode::Member member = result->get_member(current_name);
			if (member.type == GDScriptParser::ClassNode::Member::CLASS) {
				next = member.m_class;
			}
		}
		result = next;
	}
	return result;
}
bool GDScriptParser::has_class(const GDScriptParser::ClassNode *p_class) const {
	if (head->fqcn.is_empty() && p_class->fqcn.get_slice("::", 0).is_empty()) {
		return p_class == head;
	} else if (p_class->fqcn.begins_with(head->fqcn)) {
		return find_class(p_class->fqcn.trim_prefix(head->fqcn)) == p_class;
	}
	return false;
}
GDScriptParser::ClassNode *GDScriptParser::parse_class(bool p_is_static) {