Pontoon/Foundation website - UI: Update Frisian (fy-NL)

Co-authored-by: Fjoerfoks <fryskefirefox@gmail.com> (fy-NL)

Author: mozilla-pontoon

foundation/translations/locale/fy-NL/LC_MESSAGES/django.po

@@ -472,7 +472,7 @@ msgstr "Paginearring"
 
 #: foundation_cms/templates/search/_search_results.html:10
 msgid "Illustration placeholder"
-msgstr ""
+msgstr "Yllustraasjeplakhâlder"
 
 #: foundation_cms/templates/search/_search_results.html:44 foundation_cms/templates/search/_search_results.html:54
 msgctxt "Byline prefix"