doc: minor edit to the TLS documentation examples.
doc: minor edit to the TLS documentation examples.

Minimize the TLS documentation examples (we don't need "dword" in a
mov from ebx, for example.)  This is just to avoid user confusion.

Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@zytor.com>

turingstudio/nasm,turingstudio/nasm,techkey/nasm,projedi/nasm,letolabs/nasm,Distrotech/nasm,letolabs/nasm,projedi/nasm,projedi/nasm,projedi/nasm,Distrotech/nasm,techkey/nasm,turingstudio/nasm,techkey/nasm,turingstudio/nasm,letolabs/nasm,Distrotech/nasm,projedi/nasm,techkey/nasm,techkey/nasm,Distrotech/nasm