Fix: Check for and repair broken anchors

[marythought]

[WARNING] Docusaurus found broken anchors!

Please check the pages of your site in the list below, and make sure you don't reference any anchor that does not exist.
Note: it's possible to ignore broken anchors with the 'onBrokenAnchors' Docusaurus configuration, and let the build pass.

Exhaustive list of all broken anchors found:

• Broken anchor on source page path = /components/cli/dev/selectors/generate:
  -> linking to #flattening-syntax (resolved as: /components/cli/dev/selectors/generate#flattening-syntax)
• Broken anchor on source page path = /components/cli/dev/selectors/test:
  -> linking to #flattening-syntax (resolved as: /components/cli/dev/selectors/test#flattening-syntax)
• Broken anchor on source page path = /components/policy/subject_mappings:
  -> linking to ./attributes#values (resolved as: /components/policy/attributes#values)
• Broken anchor on source page path = /getting-started/configuration:
  -> linking to #platform-configuration (resolved as: /getting-started/configuration#platform-configuration)
• Broken anchor on source page path = /spec:
  -> linking to #opentdf-specification (resolved as: /spec#opentdf-specification)
• Broken anchor on source page path = /spec/concepts/security:
  -> linking to #policy-binding (resolved as: /spec/concepts/security#policy-binding)
• Broken anchor on source page path = /spec/schema/opentdf/integrity_information:
  -> linking to #encryptionInformation.integrityInformation.segment (resolved as: /spec/schema/opentdf/integrity_information#encryptionInformation.integrityInformation.segment)