### 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
pop_multiline();
				complete_extents(call);
				return nullptr;
			}
			if (current_function->identifier) {
				call->function_name = current_function->identifier->name;
			} else {
				call->function_name = SNAME("<anonymous>");
			}
		} else {
			consume(GDScriptTokenizer::Token::PERIOD, R"(Expected "." or "(" after "super".)");
			make_completion_context(COMPLETION_SUPER_METHOD, call, true);
			if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected function name after ".".)")) {
				pop_multiline();
				complete_extents(call);
				return nullptr;
			}
			IdentifierNode *identifier = parse_identifier();
			call->callee = identifier;
			call->function_name = identifier->name;
			consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected "(" after function name.)");
		}
	} else {
		call->callee = p_previous_operand;
		if (call->callee == nullptr) {
			push_error(R"*(Cannot call on an expression. Use ".call()" if it's a Callable.)*");
		} else if (call->callee->type == Node::IDENTIFIER) {
			call->function_name = static_cast<IdentifierNode *>(call->callee)->name;
			make_completion_context(COMPLETION_METHOD, call->callee);
		} else if (call->callee->type == Node::SUBSCRIPT) {