[8.1] Fix index pattern reference in tooltip (#125220)

[kibanamachine]

Backport

This is an automatic backport to 8.1 of:

• [Maps] Fix index pattern message in Create Index card tooltip #125220

Questions ?

Please refer to the Backport tool documentation

[kibana-ci]

💚 Build Succeeded

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• Commit: a92528e
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Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
maps	2.5MB	2.5MB	-4.0B

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @jsanz