profile: describe the record check as checking our own work

[abrichr]

The record check is there to catch our own mistakes: a wrong field, a wrong record, a missed keystroke, a step that ran too early. Three lines of the org profile framed it around the app's success message instead.

• "With OpenAdapt" column: "OpenAdapt checks its own work: it reads the saved record back and compares it with what it entered."
• Quickstart paragraph: the second run's test server "is set up to reject the save, so it never reaches the record". The old wording said the server rejects the save "after the app shows that it saved".
• Fault-test table: the first row is now "Look only at the screen after saving" instead of "Trust the app's success banner". The figures are the same, and the two benchmark-claims.json entries bound to that row now use the new context string.