fix: Change Wikinews category to news.

searx/settings.yml

@@ -699,7 +699,7 @@ engines:
   - name : wikinews
     engine : mediawiki
     shortcut : wn
-    categories : general
+    categories : news
     base_url : "https://{language}.wikinews.org/"
     number_of_results : 5
     search_type : text