[BUG] Few GUI improvements

[bovirus]

@valnoxy

Describe the bug

Some few changes about UI

Screenshots

Change "V." in" v."

License link

Pelase change link to license from current

https://github.com/valnoxy/checkip/blob/main/LICENSE

to

https://raw.githubusercontent.com/valnoxy/checkip/main/LICENSE

(open directly the license file in text mode)

Device (please complete the following information):

• Windows Version: 1Windows 10 22H2
• Device model: HP 800 G1
• Device type (Desktop, Laptop...): desktop

Additional context