### 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
}
					}
					break;
				case DictionaryNode::PYTHON_DICT:
					if (!match(GDScriptTokenizer::Token::COLON)) {
						if (match(GDScriptTokenizer::Token::EQUAL)) {
							push_error(R"(Expected ":" after dictionary key. Mixing dictionary styles is not allowed.)");
							advance(); 
						} else {
							push_error(R"(Expected ":" after dictionary key.)");
						}
					}
					break;
			}
			
			ExpressionNode *value = parse_expression(false);
			if (value == nullptr) {
				push_error(R"(Expected expression as dictionary value.)");
			}
			if (key != nullptr && value != nullptr) {
				dictionary->elements.push_back({ key, value });
			}
		} while (match(GDScriptTokenizer::Token::COMMA) && !is_at_end());
	}
	pop_multiline();
	consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected closing "}" after dictionary elements.)");
	complete_extents(dictionary);
	return dictionary;
}
GDScriptParser::ExpressionNode *GDScriptParser::parse_grouping(ExpressionNode *p_previous_operand, bool p_can_assign) {