tc: q_{codel,fq_codel}: add missing space in help text

Signed-off-by: Luca Lemmo <luca@linux.com>
diff --git a/tc/q_fq_codel.c b/tc/q_fq_codel.c
index 4f747eb..0392c64 100644
--- a/tc/q_fq_codel.c
+++ b/tc/q_fq_codel.c
@@ -51,7 +51,7 @@
 static void explain(void)
 {
 	fprintf(stderr, "Usage: ... fq_codel [ limit PACKETS ] [ flows NUMBER ]\n");
-	fprintf(stderr, "                    [ target TIME] [ interval TIME ]\n");
+	fprintf(stderr, "                    [ target TIME ] [ interval TIME ]\n");
 	fprintf(stderr, "                    [ quantum BYTES ] [ [no]ecn ]\n");
 	fprintf(stderr, "                    [ ce_threshold TIME ]\n");
 }