[Request] [Fleet] Remove . prefix from custom component template docs

[hop-dev]

Description

@axw noticed here that we do not need to add a . prefix to the custom component template in the Customize data retention for integrations docs here

The component template name should be <type>-<dataset>-<namespace>@custom.

Collaboration

• Other : @bmorelli25 wrote the docs originally, I am happy to have a go at making the changes if needs be, I dont know if there are guidelines on generating screenshots for docs?

Contact Person: @hop-dev

Suggested Target Release

7.16.0

[bmorelli25]

No worries, @hop-dev, I can make this fix. I'll move this to the obs-docs board.

[hop-dev]

Closing as this documentation is being removed as part of 119013