fix links (#58)

Author: johnnygreco

README.md

@@ -103,7 +103,7 @@ preview.display_sample_record()
 - **[Column Types](https://nvidia-nemo.github.io/DataDesigner/concepts/columns/)** – Explore samplers, LLM columns, validators, and more
 - **[Validators](https://nvidia-nemo.github.io/DataDesigner/concepts/validators/)** – Learn how to validate generated data with Python, SQL, and remote validators
 - **[Model Configuration](https://nvidia-nemo.github.io/DataDesigner/models/model-configs/)** – Configure custom models and providers
-- **[Person Sampling](https://nvidia-nemo.github.io/DataDesigner/concepts/persons/)** – Learn how to sample realistic person data with demographic attributes
+- **[Person Sampling](https://nvidia-nemo.github.io/DataDesigner/concepts/person_sampling/)** – Learn how to sample realistic person data with demographic attributes
 
 ### 🔧 Configure models via CLI
 

mkdocs.yml

@@ -10,7 +10,7 @@ nav:
   - Concepts:
       - Columns: concepts/columns.md
       - Validators: concepts/validators.md
-      - Person Sampling: concepts/persons.md
+      - Person Sampling: concepts/person_sampling.md
   - Models:
       - Default Model Settings: models/default-model-settings.md
       - Configure with the CLI: models/configure-model-settings-with-the-cli.md