Improve suggestion applying (#6187)

Part of #6171

src/github/prComment.ts

@@ -304,7 +304,7 @@ export class GHPRComment extends CommentBase {
 		const match = this.rawComment.body.match(SUGGESTION_EXPRESSION);
 		const suggestionBody = match?.groups?.suggestion;
 		if (match) {
-			return suggestionBody ? `${suggestionBody}\n` : '';
+			return suggestionBody ? suggestionBody : '';
 		}
 	}
 

src/view/reviewCommentController.ts

@@ -957,7 +957,7 @@ ${suggestionInformation.suggestionContent}
 			throw new Error('Cannot find the editor to apply the suggestion to.');
 		}
 		await editor.edit(builder => {
-			builder.replace(range.with(undefined, new vscode.Position(range.end.line + 1, 0)), suggestion);
+			builder.replace(range.with(undefined, editor.document.lineAt(range.end.line).range.end), suggestion);
 		});
 	}