(DOCSP-32301) Adds link to query documents collation section (#4935) (#4978)

Author: sarahsimpers

source/reference/collation.txt

@@ -19,6 +19,9 @@ comparison, such as rules for lettercase and accent marks.
 You can specify collation for a collection or a view, an index, or
 specific operations that support collation.
 
+To specify collation when you query documents in the {+atlas+} UI, see
+:atlas:`Specify Collation </atlas-ui/documents/#specify-collation>`.
+
 .. _collation-document-fields:
 
 Collation Document