Write a function to remove href's from code cells, to solve the empty_link issue

[mxjay24]

In the HTMLs we create from RMD/QMD documents, the code cells contain an 'empty link' which a screen reader would skip past, resulting in the majority of the content being missed out. These sections are structured as follows:

To rectify this we need to remove the href = "#num" from this sequence using regular expressions.