feat: add blahaj command to help section

src/builtins/help.rs

@@ -6,7 +6,8 @@ pub struct Help;
 
 impl Builtin for Help {
     fn execute(&mut self, _: &mut BuiltinConfig, _: Vec<String>) -> Result<(), ShellError> {
-        let commands = "cd              changes current working directory
+        let commands = "blahaj          prints blahaj, styles: p, t
+            cd              changes current working directory
             change-prompt   changes prompt style (default, bashlike, simpledirectory)
             exit            exits the shell
             fetch           prints out system information