doc: Update changes for 2.11.07

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
NASM 2.11.07

A few changes here

 - fix in VMOVNTPS 256 bit encoding
 - fix nil dereference in memory parsing code
   and access to uninitialized space when handling
   strings
 - fix processing of -MD option, the commit 599a982
   was fixing one issue but occasionally broke visible
   command line api, leading to (for example) syslinux
   can't be built with previous version.

There are some more bugs which are to be addressed
but due to fix of -MD option we need to release update.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>