channels: Spelling fixes

Correct typos of the following word families:

appease
permanently
overriding
residue
silliness
extension
channels
globally
reference
japanese
group
coordinate
registry
information
inconvenience
attempts
cadence
payloads
presence
provisioning
mimics
behavior
width
natively
syslabel
not owning
unquelch
mostly
constants
interesting
active
unequipped
brodmann
commanding
backlogged
without
bitstream
firmware
maintain
exclusive
practically
structs
appearance
range
retransmission
indication
provisional
associating
always
whether
cyrillic
distinctive
components
reinitialized
initialized
capability
switches
occurring
happened
outbound

ASTERISK-29714

Change-Id: Ife52ee89cd2170b684fa651ca72b1cb911a57339