Editorial: Standardize terms and casing, fix some typos (#169)

* fix some typos, casing consistency

* Update openid-sharedsignals-framework-1_0.md

Co-authored-by: Shayne Miel (he/him) <[email protected]>

* Update openid-sharedsignals-framework-1_0.md

Co-authored-by: Shayne Miel (he/him) <[email protected]>

* Update openid-sharedsignals-framework-1_0.md

Co-authored-by: Shayne Miel (he/him) <[email protected]>

* Update openid-sharedsignals-framework-1_0.md

Co-authored-by: Shayne Miel (he/him) <[email protected]>

* Apply suggestions from code review

Co-authored-by: Shayne Miel (he/him) <[email protected]>

* review suggestions

* A few more places need similar fixing.

Co-authored-by: Jen Schreiber <[email protected]>

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Co-authored-by: Shayne Miel (he/him) <[email protected]>
Co-authored-by: Atul Tulshibagwale <[email protected]>