[DOC] CSV Reporting settings (elastic#67742)

* [DOC] CSV Reporting settings

We have some undocumented CSV reporting settings.
Those should be backported to 7.3+ probably.

* Update docs/settings/reporting-settings.asciidoc

Co-authored-by: Kaarina Tungseth <kaarina.tungseth@elastic.co>

* Update docs/settings/reporting-settings.asciidoc

Co-authored-by: Kaarina Tungseth <kaarina.tungseth@elastic.co>

* Update docs/settings/reporting-settings.asciidoc

Co-authored-by: Kaarina Tungseth <kaarina.tungseth@elastic.co>

* Apply suggestions from code review

Co-authored-by: Kaarina Tungseth <kaarina.tungseth@elastic.co>

Co-authored-by: Kaarina Tungseth <kaarina.tungseth@elastic.co>
Co-authored-by: Tim Sullivan <tsullivan@users.noreply.github.com>

docs/settings/reporting-settings.asciidoc

@@ -210,6 +210,25 @@ When `xpack.reporting.capture.browser.type` is set to `chromium` (default) you c
   large exports from causing performance and storage issues.
   Defaults to `10485760` (10mB).
 
+| `xpack.reporting.csv.scroll.size`
+  | Number of documents retrieved from {es} for each scroll iteration during a CSV 
+  export.
+  Defaults to `500`.
+
+| `xpack.reporting.csv.scroll.duration`
+  | Amount of time allowed before {kib} cleans the scroll context during a CSV export.
+  Defaults to `30s`.
+
+| `xpack.reporting.csv.checkForFormulas`
+  | Enables a check that warns you when there's a potential formula involved in the output (=, -, +, and @ chars).
+  See OWASP: https://www.owasp.org/index.php/CSV_Injection
+  Defaults to `true`.
+
+| `xpack.reporting.csv.enablePanelActionDownload`
+  | Enables CSV export from a saved search on a dashboard. This action is available in the dashboard 
+  panel menu for the saved search.
+  Defaults to `true`.
+
 |===
 
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