Make the description easier to understand

In the server interface
Sometimes we choose the dns location, we will consider the physical address of the foreign country, if the country or region code can be marked in the GUI interface [for example, UK, US, JP],
The current situation is, for example, securedns. According to the description, it is impossible to determine what country he is in. If it is written as securedns [eu] (DNScrypt), it is much more convenient. If there are servers in many regions like cloudflare, it can be written as cloudflare [many] (DoH), thank you