[Elastic stack] Clarify titles and descriptions

[miltonhultgren]

Fixes #4897

This PR aligns the titles and descriptions across the Integrations for the Elastic stack to highlight that the metrics being collected are there to power the Stack Monitoring application.

[miltonhultgren]

@klacabane Do I need to bump the versions on these packages to make this change visible?

[elasticmachine]

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• Start Time: 2023-03-16T18:17:17.836+0000

• Duration: 30 min 11 sec

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Passed	126
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Total	126

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (9/9)	💚
Files	100.0% (19/19)	💚
Classes	100.0% (19/19)	💚
Methods	92.344% (193/209)	❕
Lines	90.456% (834/922)	❕
Conditionals	100.0% (0/0)	💚

[klacabane]

Yes we should bump versions

[elasticmachine]

Package beat - 0.1.2 containing this change is available at https://epr.elastic.co/search?package=beat

[elasticmachine]

Package elasticsearch - 1.4.2 containing this change is available at https://epr.elastic.co/search?package=elasticsearch

[elasticmachine]

Package enterprisesearch - 1.0.1 containing this change is available at https://epr.elastic.co/search?package=enterprisesearch

[elasticmachine]

Package kibana - 2.3.1-preview1 containing this change is available at https://epr.elastic.co/search?package=kibana

[elasticmachine]

Package logstash - 2.2.3-preview1 containing this change is available at https://epr.elastic.co/search?package=logstash