Fix various typos found by codepsell

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/helpers.c

@@ -87,7 +87,7 @@ void console_init(void)
 	/* Enable line wrap, if disabled previously, e.g., qemu */
 	dprint(STDOUT_FILENO, "\033[?7h", 5);
 
-	/* Reset atttributes, background and foreground color  */
+	/* Reset attributes, background and foreground color  */
 	dprint(STDOUT_FILENO, "\033[49m\033[39m\e[2J", 14);
 
 	log_init();