Reference documentation contains two sections with duplicate IDs

```
asciidoctor: WARNING: documenting-your-api.adoc: line 794: id assigned to section already in use: documenting-your-api-request-parts-payloads-fields
asciidoctor: WARNING: working-with-asciidoctor.adoc: line 157: id assigned to section already in use: working-with-asciidoctor-customizing-tables-title
```