[APM] Fix broken pages in legacy docs

[bmorelli25]

The changing chunk level of the legacy docs broke the page formatting of a few deeply nested pages. Adjust the pages to un-break the following links:

16:10:41 INFO:build_docs:  /tmp/docsbuild/target_repo/html/en/apm/agent/nodejs/2.x/log-correlation.html contains broken links to:
16:10:41 INFO:build_docs:   - en/apm/guide/7.16/observability-integrations.html#_ingest_your_logs_into_elasticsearch
16:10:41 INFO:build_docs:  /tmp/docsbuild/target_repo/html/en/apm/agent/nodejs/3.x/log-correlation.html contains broken links to:
16:10:41 INFO:build_docs:   - en/apm/guide/7.16/observability-integrations.html#_ingest_your_logs_into_elasticsearch
16:10:41 INFO:build_docs:  /tmp/docsbuild/target_repo/html/en/apm/agent/nodejs/current/log-correlation.html contains broken links to:
16:10:41 INFO:build_docs:   - en/apm/guide/7.16/observability-integrations.html#_ingest_your_logs_into_elasticsearch
16:10:41 INFO:build_docs:  /tmp/docsbuild/target_repo/html/en/apm/agent/nodejs/master/log-correlation.html contains broken links to:
16:10:41 INFO:build_docs:   - en/apm/guide/7.16/observability-integrations.html#_ingest_your_logs_into_elasticsearch

[bmorelli25]

This has been fixed in various PRs.