Clarify that the app is simpler

@dsingleton pointed out that the use of "project" was confusing as it
could mean this application or the Smart Answers ecosystem. I think we
could argue that both have been simplified but it's certainly more
obvious that the Smart Answers app has.

doc/arch/adr-001-removing-smartdown.md

@@ -35,7 +35,7 @@ Accepted.
 
 ## Consequences
 
-The Smart Answers project is simpler now that there is one less way of authoring Smart Answers.
+The Smart Answers application is simpler now that there is one less way of authoring Smart Answers.
 
 Developers new to the Smart Answers project have one less thing to learn to get up to speed.