update docs on automatically generating a report (elastic#191067)

## Summary

Closes elastic#188640


Updates steps in docs for automatically generating a report to match the
UI expectation especially that the share experience got an overhaul
since 8.14.

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### Risk Matrix

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Before closing this PR, invite QA, stakeholders, and other developers to
identify risks that should be tested prior to the change/feature
release.

When forming the risk matrix, consider some of the following examples
and how they may potentially impact the change:

| Risk | Probability | Severity | Mitigation/Notes |

|---------------------------|-------------|----------|-------------------------|
| Multiple Spaces&mdash;unexpected behavior in non-default Kibana Space.
| Low | High | Integration tests will verify that all features are still
supported in non-default Kibana Space and when user switches between
spaces. |
| Multiple nodes&mdash;Elasticsearch polling might have race conditions
when multiple Kibana nodes are polling for the same tasks. | High | Low
| Tasks are idempotent, so executing them multiple times will not result
in logical error, but will degrade performance. To test for this case we
add plenty of unit tests around this logic and document manual testing
procedure. |
| Code should gracefully handle cases when feature X or plugin Y are
disabled. | Medium | High | Unit tests will verify that any feature flag
or plugin combination still results in our service operational. |
| [See more potential risk
examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
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Co-authored-by: Elastic Machine <[email protected]>
Co-authored-by: Tim Sullivan <[email protected]>

docs/user/reporting/automating-report-generation.asciidoc

@@ -16,19 +16,17 @@ To create the POST URL for PDF reports:
 
 . Open the dashboard, visualization, or **Canvas** workpad you want to view as a report.
 
-. From the toolbar, click *Share > PDF Reports*, then choose an option:
+* If you are using *Dashboard* or *Visualize Library*, from the toolbar, click *Share > Export*, select the PDF option then click *Copy POST URL*.
 
-* If you are using *Dashboard* or *Visulize Library*, click *Copy POST URL*.
-
-* If you are using *Canvas*, click *Advanced options > Copy POST URL*.
+* If you are using *Canvas*, from the toolbar, click *Share > PDF Reports*, then click *Advanced options > Copy POST URL*.
 
 To create the POST URL for CSV reports:
 
 . Go to *Discover*.
 
 . Open the saved search you want to share.
 
-. In the toolbar, click *Share > CSV Reports > Copy POST URL*.
+. In the toolbar, click *Share > Export > Copy POST URL*.
 
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