Update custom-collector.md

[jackgopack4]

update providers in builder-config.yaml to match stable versions.

Per https://github.com/open-telemetry/opentelemetry-collector/releases/tag/v0.111.0, more providers are marked as stable. Updating custom collector documentation to use the latest stable components by default

[svrnm]

I just wanted to suggest that we use the versions from the registry for those entries as well, but then I saw that the providers are not in the registry. I wonder if we should add them? cc @mx-psi, since we discussed this here: #5304 (comment)

[mx-psi]

I think confmap providers should be added to the registry: they are conceptually similar to other kinds of components in the Collector in that they provide extra functionality to the Collector, can be added on a Collector builder manifest, can be 'official' or come from a third-party repository...

[svrnm]

I think confmap providers should be added to the registry: they are conceptually similar to other kinds of components in the Collector in that they provide extra functionality to the Collector, can be added on a Collector builder manifest, can be 'official' or come from a third-party repository...

then let's do that, in the meantime, would you mind approving this PR, so we have it up-to-date and then we add them to the registry?