Fixed typos in documentation and comments

[jbampton]

Spelling clean up in cs files

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Summary of the changes (Less than 80 chars)

Fixes #{issue number} (in this specific format)

Description

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[NightOwl888]

Thanks for the PR.

Only 1 of the many misspellings of OrderedDictionary were fixed (a change that was made in #1200), so I went ahead and did the rest.