First of all, if you want to present markdown text with code blocks in the forum, you need to enclose the entire thingy with at least four backticks, ````. This preserves the code blocks within your markdown text.
Second, what are you really trying to achieve? Do you want to use your notes as prompts for the GPT-3 to generate some randomised text? What would you use that text for?
And you want to do that on all your notes?