Update SUMMARY.md, overview.md, trainer.md, training-format/README.md, training-format/dates-and-times.md, eligibility-and-requirements/README.md, eligibility-and-requirements/expectations.md, eligibility-and-requirements/support.md files

Update README.md, overview.md, trainer.md, training-format/README.md, training-format/dates-and-times.md, eligibility-and-requirements/README.md, eligibility-and-requirements/expectations.md, eligibility-and-requirements/support.md files