Correct some inaccuracies in the updates summary, specifically:
* AVN: change the letter in microcode revision to lower index;
* CML-U62: move down in order to preserve F-MO-S sorting order;
* GKL: move from "new platforms" to "updated platforms", as it had
revision 0x2e in the microcode-20190918 release, rename it to GLK
(as it is the abbreviation for Gemini Lake[1]);
* GKL-R: rename to GLK-R, as it is the abbreviation for Gemini Lake[1];
* CLX-SP: move from "updated platforms" to "new platforms", as it
wasn't available in the microcode-20190918 release;
* ICL U/Y, SKL U/Y, SKL H/S/E3: Add a dash to the codename in order
to be consistent with the rest of the changes summary;
* SKX-SP, SKX-D: Correct new revision (0x2000065 instead of 0x65);
* Mention the fact that the microcode file 06-9e-0c (CFL-H/S)
has been removed.
[1] https://en.wikichip.org/wiki/intel/cores/gemini_lake
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>