mbpfan: Improve advice on install

[Eloitor]

Is this a new report?

Yes

System Info

Void 6.6.37_1 x86 64 GenuineIntel uptodate rFF

Package(s) Affected

mbpfan-2.2.1_1

Does a report exist for this bug with the project's home (upstream) and/or another distro?

linux-on-mac/mbpfan#190

Expected behaviour

I installed void in a macbook pro. I got advice to run sudo mbpfan -t.
I expected it to work and mbpfan to enable the fan.

I suggest changing the advice to something like "edit /etc/mbpfan.conf"

Actual behaviour

$ sudo mbpfan -t
Starting the tests..
It is normal for them to take a bit to finish.
Error: max_fan_speed value is not 6200
Tests run: 5

Steps to reproduce

1. Install void on a macbook air.
2. Install mbpfan
3. run sudo mbpfan -t

[ahesford]

Seems like this is working as expected, and the behavior change should be considered upstream.