Fixed a Few Spelling and Grammar Issues (#22604)
Fixed a Few Spelling and Grammar Issues (#22604)

- In the Sprint description under Artifacts, fixed a few grammar errors and missing letters in the sentence 'A deliverable can defined...'.
- In the Scrum Master description under Roles, added the initials used in the description for clarity, fixed a few grammatical errors, and improved consistency when referencing Scrum Guide.
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