MINOR: stats: improve alignment of color codes to save one line of header

Having both "active or backup DOWN" and "not checked" on the left side of
the color caption inflates the whole header block for no reason. Simply
move them both on the same line and reduce the header height.
diff --git a/src/dumpstats.c b/src/dumpstats.c
index c76e115..eae736c 100644
--- a/src/dumpstats.c
+++ b/src/dumpstats.c
@@ -3846,7 +3846,6 @@
 	              "<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
 	              "</tr><tr>\n"
 	              "<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
-	              "</tr><tr>\n"
 	              "<td class=\"active8\"></td><td class=\"noborder\">not checked </td>"
 	              "</tr><tr>\n"
 	              "<td class=\"maintain\"></td><td class=\"noborder\" colspan=\"3\">active or backup DOWN for maintenance (MAINT) &nbsp;</td>"