Revise TopRecommendations config defaults.

config/vufind/searches.ini

@@ -555,9 +555,13 @@ WorkKeys = year
 ;Subject[]          = OpenLibrarySubjectsDeferred:lookfor:5:true:topic,place,person,time
 
 [TopRecommendations]
-Author[]            = AuthorFacets
-Author[]            = SpellingSuggestions
-CallNumber[]        = "TopFacets:ResultsTop"    ; disable spelling in this context
+; You can uncomment the following lines to replace default TopFacets recommendations
+; with a list of matching author names when users perform an Author search:
+;Author[]            = AuthorFacets
+;Author[]            = SpellingSuggestions
+; We override the CallNumber settings here to exclude SpellingSuggestions, which are
+; not relevant in the context of a call number search.
+CallNumber[]        = "TopFacets:ResultsTop"
 ; Do not show top recommendations for the Versions (WorkKeys) search by default
 WorkKeys[]          = false