Fixes wordiness about re-entering your body when you're unnested (#3761)

# About the pull request

This PR is a followup to #3597 that was requested but refused in #3747
to improve the situation where there is too much text in a tgui_alert
when ghosting while nested.

# Explain why it's good for the game

Instead of:

![image](https://github.com/cmss13-devs/cmss13/assets/76988376/aee760ce-ed79-4cac-be06-b2d265bd69c6)
It is now:

![image](https://github.com/cmss13-devs/cmss13/assets/76988376/26859630-c185-4c2a-94e2-d275e85a620e)

# Testing Photographs and Procedure

1. Get nested
2. Remain in body for the first prompt
3. Ghost

# Changelog
:cl: Drathek
spellcheck: Tweaked message when ghosting while nested
/:cl:

code/modules/mob/dead/observer/observer.dm

@@ -398,7 +398,7 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 		var/is_nested = (buckled && istype(buckled, /obj/structure/bed/nest)) ? TRUE : FALSE
 		var/obj/structure/bed/nest/nest = FALSE
 		if(is_nested)
-			text_prompt += "\nSince you're nested, you will be given a chance to reenter your body upon being freed."
+			text_prompt += "\nSince you're nested, you will get a chance to reenter your body if freed."
 			nest = buckled
 		var/response = tgui_alert(src, text_prompt, "Are you sure you want to ghost?", options)
 		if(response == "Aghost")