Misc typo fixes on multiple pages.

- [AGS] Fixed inconsistent hyphenation of "blockchain".
- [AGS] Fixed awkward pluralization.
- [AGS] Fixed missing/incorrect punctuation.
- [PTS] Fixed missing/incorrect punctuation.
- [PTS] Added quotes around identifier.
- [BTS] Made capitalization consistent (2 commits).
- [DEVCON] Fixed hyphenated adjective.
- [PTS] Made DAC reference consistent.
- [DEVCON] Fixed a run-on sentence.
- [DEVCON] Added a missing comma.

Note that each commit in this pull request reflects an item in the above list (unless otherwise noted).

PTS PZ32Dv8NA1CBNtYyu5Z14qWNL6VWDSP4HC