Fix format specifier in find_device memory requirement check

[Pmoonesi]

There was a small error in utils/common.py that led to a ValueError when attempting to print the required memory. The format specifier was missing precision, resulting in the error. I've included screenshots of the error and how it was resolved after correcting the format specifier.

PS: I'm using the latest FastSurfer docker image.

Command:

docker run --gpus all  deepmi/fastsurfer:latest --fs_license /fs_license/license.txt --t1 /data/structural.nii --sid 003_S_0907 --sd output --parallel

The error:

After resolution:

[dkuegler]

Thanks for providing this fix!