Manuform: trim case for loligagger's external holder

[dereknheiley]

it's relatively easy to trim the loligagger's external holder print to fit in the case, but one side of the holder can't be cut enough because of the pcb location. It would be great if the model was adjusted for this :)

[UtamaruMonster]

Got the same issue after printing realized that it does not fit, please fix this so other beginners do not fall victims to this issue