docs(store): cleanup wording and bullets in selectors guide (#2274)
docs(store): cleanup wording and bullets in selectors guide (#2274)

Matched the bullet list items at the top, removed some of the "re-" words where the non-hyphenated variant was common enough, and changed "function" to "functions" where appropriate.
brandonroberts/platform,brandonroberts/platform,brandonroberts/platform,brandonroberts/platform