More detail in notifications

[mora-phi]

Is your feature request related to a problem? Please describe.
It's not really a problem if you have one instance, but I have two sending notifications to the same Telegram group, and it's hard to distinguish one from the other.

Describe the solution you'd like
Have the name of the instance appear in the notifications (I'm using Telegram).

Additional context
Right now, the notifications are like this:

Speedtest #60
Ping: 2.49 (ms)
Download: 109.64 (Mbps)
Upload: 92.69 (Mbps)

And I would like them to be like:

Speedtest Tracker Instance XXX #60
Ping: 2.49 (ms)
Download: 109.64 (Mbps)
Upload: 92.69 (Mbps)```