minor raptor tweaks (#83407)

## About The Pull Request
i think i made these a bit too strong, this hopefully balances them out
a bit. they were initially accidentally given alot of armor against
ranged attacks, this is now removed. also ive reduced their base hp by a
bit. im open to other suggestions and feedback

## Why It's Good For The Game
they were stronger than i intended. this keeps their usefulness for
battling tendrils, or ore vents but also prevents using them to cheese
several megafauna

## Changelog
🆑
balance: you can now polymorph into raptors
balance: raptors overall have less health and no longer have armor
against ranged attacks
/🆑

code/datums/ai/basic_mobs/basic_subtrees/express_happiness.dm

@@ -7,7 +7,7 @@
 	var/happiness_key = BB_BASIC_HAPPINESS
 	///list of emotions we relay when happy
 	var/static/list/happy_emotions = list(
-		"celebrate happily!",
+		"celebrates happily!",
 		"dances around in excitement!",
 	)
 	///our moderate emotions