cmd: smbios: add missing colon after UUID

For consistent formatting add a colon ':' after the UUID label.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/cmd/smbios.c b/cmd/smbios.c
index 67f3a9f..62935ec 100644
--- a/cmd/smbios.c
+++ b/cmd/smbios.c
@@ -76,7 +76,7 @@
 	smbios_print_str("Version", table, table->version);
 	smbios_print_str("Serial Number", table, table->serial_number);
 	if (table->length >= 0x19) {
-		printf("\tUUID %pUl\n", table->uuid);
+		printf("\tUUID: %pUl\n", table->uuid);
 		smbios_print_str("Wake Up Type", table, table->serial_number);
 	}
 	if (table->length >= 0x1b) {