fix wrong depth level for references

content/docs/agility/development.md

content/docs/agility/frontiers.md

content/docs/agility/incentives.md

content/docs/agility/modalities.md

content/docs/agility/testing.md

content/docs/migration/algorithms.md

content/docs/migration/automation.md

content/docs/migration/performance.md

content/docs/migration/process.md

content/docs/migration/security.md

content/docs/migration/standards.md