Docs: Refine glossary.rst

- Change "Trusted Firmware - M" to "Trusted Firmware-M".
- Align the glossary.rst in 80 columns.
- Sort by alphabet.

Change-Id: I5ef05409a310b0edd8a1c96c283f332b4062a85a
Signed-off-by: Edison Ai <edison.ai@arm.com>
1 file changed