Prevent special characters being escaped

Hi,
I really love your extension, and it has been a HUGE timesaver.. but the one thing I wish there were an option was not to have it auto-escape stuff in the front matter of MD files. For example, I have it added at the top (like you do) and change the formatting later in the document. It then adds a backslash to `[` and `]` symbols and stuff to underscores.

I don't know if some linter does it or what, but ideally, if you can't have it detect front matter, could I at least turn off the auto-escape?

Start by reproducing the escaping in a Markdown file with front matter, using the VS Code extension described in the issue. Trace where brackets and underscores are escaped and determine whether front matter can be detected or escaping can be disabled. Done means front-matter content is preserved as entered, with a verified behavior or regression test.

Escrita pelo modelo de indexação a partir do texto da issue.