[Serverless]: Rename "Elasticsearch Serverless <type> plugin"

[ppf2]

Serverless Docs

Elasticsearch

Description

https://www.elastic.co/docs/current/serverless/elasticsearch/ingest-data-through-logstash

Logstash Elasticsearch Serverless output plugin 11.18.0 or later
Logstash Elasticsearch Serverless input plugin 4.18.0 or later
Logstash Elasticsearch Serverless filter plugin 3.16.0 or later

We don't have Serverless specific Logstash plugins so the fact that we are calling the above "Elasticsearch Serverless .... plugin" can be misleading.

So I will suggest renaming the above to:

Logstash Elasticsearch output plugin 11.18.0 or later
Logstash Elasticsearch input plugin 4.18.0 or later
Logstash Elasticsearch filter plugin 3.16.0 or later

Thx!

Resources and additional context

https://www.elastic.co/docs/current/serverless/elasticsearch/ingest-data-through-logstash

[georgewallace]

We are using variables for these strings, we should update these to not use the strings as they are incorrect for logstash as @ppf2 mentions. cc: @karenzone

[georgewallace]

These links are fixed after migrating the docs to asciidoc. Verified on the reported page that they do in fact state what it should be called. cc: @karenzone