deal with some deprecation warnings

Description and goal

WARN  deprecated: site config key paginate was deprecated in Hugo v0.128.0 and will be removed in a future release. Use pagination.pagerSize instead.
WARN  deprecated: site config key paginatePath was deprecated in Hugo v0.128.0 and will be removed in a future release. Use pagination.path instead.
WARN  deprecated: PageSize was deprecated in Hugo v0.128.0 and will be removed in a future release. Use PagerSize instead.

Tasks and activities

• change config defaults
• validate no brokeyness

Acceptance criteria

• no more warnings...
• things still work...