fix: preserve Structure

[RahulGautamSingh]

All the text inside of p and span tags are updated which leads to problem with items inside ul, li and a tags.
A proper way to handle it will be to divide tags into sections such as ignore, links, lists so that we can update them separately.
Example:

ignore = ['header', 'h1', ....]
links = ['a', 'img', ...]
lists = ['ul', 'li',...]