### 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
push_error(R"(Expected "func" or "var" after "static".)");
				}
			} break;
			case GDScriptTokenizer::Token::ANNOTATION: {
				advance();
				
				AnnotationNode *annotation = parse_annotation(AnnotationInfo::STANDALONE | AnnotationInfo::CLASS_LEVEL);
				if (annotation != nullptr) {
					if (annotation->applies_to(AnnotationInfo::STANDALONE)) {
						if (previous.type != GDScriptTokenizer::Token::NEWLINE) {
							push_error(R"(Expected newline after a standalone annotation.)");
						}
						if (annotation->name == SNAME("@export_category") || annotation->name == SNAME("@export_group") || annotation->name == SNAME("@export_subgroup")) {
							current_class->add_member_group(annotation);
						} else {
							
							push_error(R"(Unexpected standalone annotation in class body.)");
						}
					} else {
						annotation_stack.push_back(annotation);
					}
				}
				break;
			}
			case GDScriptTokenizer::Token::PASS:
				advance();
				end_statement(R"("pass")");
				break;
			case GDScriptTokenizer::Token::DEDENT:
				class_end = true;