docs/uctypes: Describe C types (INT/UINT/etc.)
docs/uctypes: Describe C types (INT/UINT/etc.)

Change-Id: I2c1db7ee98a9a509058702203cb107996ccb8aeb

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython