fix quote reply (#6230)

* fix quote reply

* Two new lines before reply

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Co-authored-by: Alex Ross <alros@microsoft.com>

Author: ixzhao

webviews/components/comment.tsx

@@ -310,7 +310,7 @@ export function AddComment({
 	const textareaRef = useRef<HTMLTextAreaElement>();
 
 	emitter.addListener('quoteReply', (message: string) => {
-		const quoted = message.replace(/\n\n/g, '\n\n> ');
+		const quoted = message.replace(/\n/g, '\n> ');
 		updatePR({ pendingCommentText: `> ${quoted} \n\n` });
 		textareaRef.current?.scrollIntoView();
 		textareaRef.current?.focus();