doc: document fix to the codeview output format
doc: document fix to the codeview output format

Document the label fix; although a global error, it was user-visible
in the Codeview backend so document it as such.

Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@zytor.com>
Cc: Jim Kukunas <39ce210e552e2b3b7e437031f6647cc5be785794@linux.intel.com>

techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm