[doc] fix about.website for hoogle

searx/settings.yml

@@ -767,7 +767,7 @@ engines:
     categories: it
     shortcut: ho
     about:
-      website: https://www.haskell.org/
+      website: https://hoogle.haskell.org/
       wikidata_id: Q34010
       official_api_documentation: https://hackage.haskell.org/api
       use_official_api: false