Octopus config has 4 lines using `=` instead of `:` variable assignment

[bxk21]

Voron-2/firmware/klipper_configurations/Octopus/Voron2_Octopus_Config.cfg

Line 263 in 0a07d1a

control = pid

[RyanScott96]

I don't think I have permission to attach a PR, but I made this for this issue:
#491