Fix deprecation warning message (istio#13806)

Author: Eric Van Norman

hugo.toml

@@ -6,7 +6,7 @@ uglyURLs = false
 enableRobotsTXT = true
 pluralizeListTitles = false
 canonifyURLs = true
-disableKinds = ["taxonomy", "taxonomyTerm"]
+disableKinds = ["taxonomy"]
 anchor = "smart"
 enableGitInfo = true
 enableEmoji = false