Update unsupported field types in formula docs

Author: dvdbsrw

changelog/entries/unreleased/refactor/update_unsopported_field_types_in_docs.json

@@ -0,0 +1,7 @@
+{
+    "type": "refactor",
+    "message": "Update the list of unsupported field types for formula in our docs.",
+    "issue_number": null,
+    "bullet_points": [],
+    "created_at": "2024-05-09"
+}

docs/tutorials/understanding-baserow-formulas.md

@@ -142,8 +142,8 @@ important for you on our [community forum](https://community.baserow.io/).
 
 It is not currently possible to reference and use the following fields in a formula:
 
-* Link to table
-* File
-* Single select
-* Multiple select The ability to use these fields will be added in a future update.
-
+* Collaborators
+* Created by
+* Last modified by
+* Password
+* AI Prompt