instanceinfo.sh: Typo: pass “${instance}”, not “instance”.

instanceinfo.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Print some basic info about fediverse instances.
 
-# Version: 2019-09-30_1
+# Version: 2019-11-12_1
 
 if [[ -z "${1}" ]]; then
     echo "usage: ${0} DOMAIN" >&2
@@ -90,7 +90,7 @@ function parse_nodeinfo()
     elif [[ "${implementation}" == "mastodon" ]]; then
         if [[ "${implementation}" == "mastodon" ]]; then
             echo -e "\nUsing Mastodon API additionally."
-            parse_mastodon instance "https://${instance}/api/v1/instance"
+            parse_mastodon ${instance} "https://${instance}/api/v1/instance"
         fi
     elif [[ "${implementation}" == "pixelfed" ]]; then
         echo "Further info, maybe: https://${instance}/site/terms"