[M] Change in coreboot[main]: Documentation: Add Erying Polestar G613 Pro

[Angel Pons (Code Review)]

Attention is currently required from: Alicja Michalska.

Angel Pons has posted comments on this change by Alicja Michalska. ( https://review.coreboot.org/c/coreboot/+/81611?usp=email )

Change subject: Documentation: Add Erying Polestar G613 Pro
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Patch Set 5:

(7 comments)

File Documentation/mainboard/erying/tgl_matx.md:

PS5: 
I guess naming the file `tgl_μatx.md` is just asking for trouble 😄

https://review.coreboot.org/c/coreboot/+/81611/comment/56ce3ed2_2aa62f44?usp... :
PS5, Line 15: | Microcode       | CPU Microcode                   | Required (see notes) |
Technically, those are microcode *updates*. But I'm being pedantic.

https://review.coreboot.org/c/coreboot/+/81611/comment/d8d1f275_7722949a?usp... :
PS5, Line 21: | FD              | Intel Flash Descriptor          | Optional (if SI_BIOS)|
IFD is always needed, unless flashing the BIOS region only

https://review.coreboot.org/c/coreboot/+/81611/comment/483ced0c_b8fe4678?usp... :
PS5, Line 28: overal 
typo: overall

```suggestion
(Advanced Programmable Interrupt Controller), resulting in overall instability.
```

https://review.coreboot.org/c/coreboot/+/81611/comment/5454f8e3_3f6e5c3b?usp... :
PS5, Line 89: x3 
PCIe x3 might be a cute face, but I think it's a typo 😄

https://review.coreboot.org/c/coreboot/+/81611/comment/0de7a51a_d18b6298?usp... :
PS5, Line 119: bifurfication 
Typo (bifurcation), trailing space and PCIe spelling:

```suggestion
- PCIe lane bifurcation
```

File Documentation/mainboard/erying/tgl_matx_board.jpg:

PS5: 
See if you can use something to optimise the image size. I think the size could be reduced by at least 50% without losing much quality.