test: Fix the help for the ut command

Drop the 'ut' prefix, this is superfluous and not present in
any of the other ut tests.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/cmd_ut.c b/test/cmd_ut.c
index 0cb5144..0f56409 100644
--- a/test/cmd_ut.c
+++ b/test/cmd_ut.c
@@ -201,7 +201,7 @@
 	"\nfdt - fdt command"
 #endif
 #ifdef CONFIG_CONSOLE_TRUETYPE
-	"\nut font - font command"
+	"\nfont - font command"
 #endif
 #ifdef CONFIG_CMD_LOADM
 	"\nloadm - loadm command parameters and loading memory blob"