Feature/enforce black formatting (#62)

* docs: fix example filename references and swap documentation URLs

- Changed complete_walkthrough.py to walkthrough.py in all references
- Swapped API reference and Product documentation URLs in header
- Cleaned up limitations section for clarity

* Update README.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* style: apply Black code formatting to pass CI checks

* ci: enforce Black formatting as required check

- Remove continue-on-error flag from Black formatting step
- Black formatting is now a blocking gate for PRs
- All code has been formatted to pass Black checks

* ci: enforce Black formatting in Azure DevOps pipeline

- Remove continueOnError flag from Black check in ci-pr.yaml
- Makes Black formatting a blocking gate in Azure DevOps PRs
- Matches GitHub Actions workflow configuration

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: suyask-msft

.azdo/ci-pr.yaml

@@ -48,7 +48,6 @@ extends:
         - script: |
             black src tests --check
           displayName: 'Check format with black'
-          continueOnError: true  # TODO: fix detected formatting errors and remove this line
         
         - script: |
             # stop the build if there are Python syntax errors or undefined names