site: use array for schema.org keywords

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>

Author: dvdksn

layouts/_partials/schema.html

@@ -1,5 +1,5 @@
 {{- $description := partial "utils/description.html" . -}}
-{{- $keywords := delimit (partialCached "utils/keywords.html" . .) ", " -}}
+{{- $keywords := partialCached "utils/keywords.html" . . -}}
 
 {{- /* Build TechArticle schema for content pages */ -}}
 {{- $schema := dict