DOCSP-24114 Replace collation options dropdowns with an editor (#600)

Author: kanchana-mongodb

source/includes/steps-create-index.yaml

@@ -93,8 +93,8 @@ content: |
 
      * - Use custom collation
 
-       - Create a custom collation for the index using the options
-         provided in |compass-short|.
+       - Create a custom collation for the index by typing or pasting the
+         collation document in the text box.
 
        - :manual:`Collation Document </reference/collation/#collation-document>`