docs/features: Fix documentation errors
docs/features: Fix documentation errors

* Fixed up typos and other errors in the documentation.

Acked-by: Koen Kooi <aeb23945acf582c79fe8e7da695ed6eac02acbbd@ti.com>
Signed-off-by: Chase Maupin <874d7d4fa211492c1868f6a91442712d37040f21@ti.com>
Signed-off-by: Denys Dmytriyenko <e7d361c7f6c045f0c4fa54d2afc4a237f30bc767@denix.org>

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