stats_vty: Add verb to sentence for show asciidoc counters

Change-Id: Ib444383d2074ddb89b3fe5bbf198bcbfabd7057f
diff --git a/src/vty/stats_vty.c b/src/vty/stats_vty.c
index 8c2ddc6..296519c 100644
--- a/src/vty/stats_vty.c
+++ b/src/vty/stats_vty.c
@@ -510,7 +510,7 @@
       SHOW_STR "Asciidoc generation\n" "Generate table of all registered counters\n")
 {
 	vty_out(vty, "// autogenerated by show asciidoc counters%s", VTY_NEWLINE);
-	vty_out(vty, "These counters and their description based on %s %s (%s).%s%s",
+	vty_out(vty, "These counters and their description are based on %s %s (%s).%s%s",
 		host.app_info->name,
 		host.app_info->version,
 		host.app_info->name ? host.app_info->name : "", VTY_NEWLINE, VTY_NEWLINE);