Update Suite docs for v8.1 features.

[EngincanV]

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[github-actions]

Images automagically compressed by Calibre's image-actions ✨

Compression reduced images by 20.5%, saving 285.41 KB.

Filename	Before	After	Improvement	Visual comparison
en/images/abpsuite2.8.1.png	128.41 KB	99.23 KB	-22.7%	View diff
en/images/abpsuite6.8.1.png	121.20 KB	92.72 KB	-23.5%	View diff
en/images/navigation-collection-book-entity.8.1.png	281.77 KB	212.89 KB	-24.4%	View diff
en/images/navigation-collection-category-entity.8.1.png	177.26 KB	135.15 KB	-23.8%	View diff
en/images/navigation-property-author-entity-8.1.png	198.00 KB	154.25 KB	-22.1%	View diff
en/images/navigation-property-book-entity-8.1.png	313.37 KB	282.69 KB	-9.8%	View diff
en/images/suite-entity-create-info-8.1.png	129.40 KB	97.83 KB	-24.4%	View diff
en/images/suite-include-entities-from-abp-modules.png	39.98 KB	29.23 KB	-26.9%	View diff

813 images did not require optimisation.