DOCS: fix a forgotten "VOLUNTEER NEEDED"
@@ -95,7 +95,7 @@ Providers in this category and their maintainers are:
* `LINODE` @koesie10
* `NAMECHEAP` VOLUNTEER NEEDED
* `NETCUP` @kordianbruck
-* `NS1` VOLUNTEER NEEDED
+* `NS1` @costasd
* `OCTODNS` @TomOnTime
* `OPENSRS` @pierre-emmanuelJ
* `ORACLE` @kallsyms
