Remove double line in "Why use sign.mt" section

[TimothyRbz]

Just noticed that there is a slight double line on the bottom of the whole frame.

[AmitMY]

Can not reproduce this. Can you? If so, please record a video or let me know how

[TimothyRbz]

does this clarify? https://drive.google.com/drive/u/0/folders/1UPMC7Vt8rg3tpslnE47BfqTR55-NS1MX

[AmitMY]

I still fail to replicate it. Let's take a look when in the same room