### 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(vformat(R"(Invalid argument %d of annotation "@export_flags": Expected flag name.)", i + 1), p_annotation->arguments[i]);
				return false;
			}
			if (t.size() == 2) {
				if (t[1].is_empty()) {
					push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": Expected flag value.)", i + 1), p_annotation->arguments[i]);
					return false;
				}
				if (!t[1].is_valid_int()) {
					push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": The flag value must be a valid integer.)", i + 1), p_annotation->arguments[i]);
					return false;
				}
				int64_t value = t[1].to_int();
				if (value < 1 || value >= (1LL << max_flags)) {
					push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": The flag value must be at least 1 and at most 2 ** %d - 1.)", i + 1, max_flags), p_annotation->arguments[i]);
					return false;
				}
			} else if (i >= max_flags) {
				push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": Starting from argument %d, the flag value must be specified explicitly.)", i + 1, max_flags + 1), p_annotation->arguments[i]);
				return false;
			}
		}
		if (i > 0) {
			hint_string += ",";
		}
		hint_string += arg_string;
	}
	variable->export_info.hint_string = hint_string;
	
	DataType export_type = variable->get_datatype();