translation fix

I mostly changed this one because of the specificity of PTSD as a
condition, despite it not being in the Japanese script (and there not
really being any good reason for Mion to think that Keiichi would have
PTSD)

Update/omake_01.txt

@@ -532,7 +532,7 @@ void main()
 
 	PlaySE(3, "s20/08/440800072", 256, 64);
 	OutputLine(NULL, "　あの玄関やラストのシーンは、追い詰められた圭一くんの、被害意識からの妄想じゃないかって思うんだ。」",
-		   NULL, "That last scene and the one with the entryway, I think it might have been a delusional episode brought about by post traumatic stress disorder.\"", Line_WaitForInput);
+		   NULL, "That last scene and the one with the entryway, I think that the stress must have driven him into paranoid delusions.\"", Line_WaitForInput);
 	OutputLineAll(NULL, "\n", Line_ContinueAfterTyping);