Docs recommend 1GB EFI partition size while Calamares ask for 1GiB

[sebo505]

Disk Partitioning section states:
To create an EFI System Partition, open up GParted and create a FAT32 partition that is 1 GB in size.

If you do so (1GB are roughly 954 MiB) and chose this partition as EFI partition under custom partitioning, Calamares issues a warning that EFI partition size should be 1024 MiB, which is 1GiB.

So, in the docs 1GB Efi partition size recommendation should be changed to 1GiB(= 1024 MiB). We should explicitly mention the size in MiB, as that is the unit that gparted uses.