Remove backsticks in /jshell version (Together-Java#1164)

Co-authored-by: Andrew1031 <andrewyee67@gmail.com>

application/src/main/java/org/togetherjava/tjbot/features/jshell/JShellCommand.java

@@ -111,12 +111,11 @@ public void onModalSubmitted(ModalInteractionEvent event, List<String> args) {
 
     private void handleVersionCommand(SlashCommandInteractionEvent event) {
         String code = """
-                System.out.println("```");
                 System.out.println("Version: " + Runtime.version());
                 System.out.println("Vendor:  " + System.getProperty("java.vendor"));
                 System.out.println("OS:      " + System.getProperty("os.name"));
                 System.out.println("Arch:    " + System.getProperty("os.arch"));
-                System.out.println("```");""";
+                """;
         handleEval(event, null, false, code, false);
     }