Add the ability to expand the text box in the knowledge center Article create/edit page

When creating articles for the KC bot, the text box where you create the content is really small. Can you make it expandable? 

First screenshot shows how small the space is. If you add an image, and want to type above it, the field keeps on scrolling down so you can’t see what you’re typing.  

Second screen shot is an example of what I mean by “expandable” by selecting the bottom right corner you can drag the text box so that it is bigger and easier to manage large content.