fix missing headers in docs home theme

[recrwplay]

Updates to how roles are displayed next to headers caused a problem with the docs-home theme.

This PR restores missing headers in docs home pages.

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[recrwplay]

@davidoliverSP2 the netlify preview includes a couple of pages built using the docs-home theme, which show that the headings are visible - eg https://deploy-preview-173--neo4j-docs-ui.netlify.app/drivers-apis.html

[davidoliverSP2]

@davidoliverSP2 the netlify preview includes a couple of pages built using the docs-home theme, which show that the headings are visible - eg https://deploy-preview-173--neo4j-docs-ui.netlify.app/drivers-apis.html

nice - they look good!