title capitalization fix

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README.md

main/compute/index.md

main/index.md

...s/docs/contribute/contributing/set-up-and-work-locally.md

...-us/docs/contribute/contributing/work-within-gitlab-ui.md

topics/about-us/docs/contribute/index.md

topics/about-us/docs/contribute/style-guide/mkdocs-101.md

topics/about-us/docs/contribute/style-guide/style.md

topics/about-us/docs/contribute/style-guide/test-rules.md

...about-us/docs/contribute/style-guide/writing-practices.md

topics/about-us/docs/contribute/technical-details.md

topics/account/docs/access.md

topics/account/docs/mfa/index.md

topics/account/docs/mfa/perform.md

topics/compute/concepts/docs/comparison.md

topics/compute/concepts/docs/hw.md

topics/compute/concepts/docs/index.md

topics/compute/concepts/docs/use-cases/mmci-muni-bbmri.md

topics/compute/concepts/docs/use-cases/muni-kypo.md