Missing information in RHI Samples documentation page on RHI-Samples wiki

[LB-BartoszDudzinski]

Describe the issue

The description for the following Samples is missing on the RHI-Samples wiki documentation page:

• MatrixAlignmentTest
• VariableRateShading

Please note that the issue should be considered a Major.

Impacted page(s)

https://github.com/o3de/o3de-atom-sampleviewer/wiki/RHI-Samples

Expected experience

All Samples have a proper description on the wiki page.

[LB-ArturZieba]

It should be noted that currently there is also an "OpenXr" sample, which is not listed on the documentation page. Verified on following setup branches:

• o3de: Stabilization/2310 (7aabf7f)
• o3de-multiplayersample: Stabilization/2310 (o3de/o3de-multiplayersample@149bf33)
• o3de-multiplayersample-assets: Stabilization/2310 (cd6d15f)