add newline after autoformat java codeblock

Author: danthe1st

src/main/java/net/discordjug/javabot/systems/help/AutoCodeFormatter.java

@@ -28,7 +28,7 @@
 @RequiredArgsConstructor
 @Component
 public class AutoCodeFormatter {
-	private static final String CODEBLOCK_PREFIX = " ```java";
+	private static final String CODEBLOCK_PREFIX = " ```java\n";
 	private static final String CODEBLOCK_SUFFIX = " ```";
 	private final AutoMod autoMod;
 	private final BotConfig botConfig;