[Docs]: Sample connector links are dead

[mootari]

Page URL

https://docs.airbyte.com/platform/connector-development/config-based/low-code-cdk-overview#sample-connectors

Description

All links in the section "Sample connectors" lead to 404s, apparently because one level in the directory hierarchy was removed.

Example:

404:    https://github.com/airbytehq/airbyte/tree/master/airbyte-integrations/connectors/source-greenhouse/source_greenhouse/manifest.yaml
Actual: https://github.com/airbytehq/airbyte/blob/master/airbyte-integrations/connectors/source-greenhouse/manifest.yaml