[Bug] V3 Hyperparameter Tuning Pipeline page labelled "Download Data" in navigation due to missing title cell

[admivsn]

PySDK Version

• PySDK V2 (2.x)
• [ x] PySDK V3 (3.x)

Describe the bug
The V3 Hyperparameter Tuning Pipeline example notebook is missing a title markdown cell. The notebook's first cell is a code cell (imports), so the first markdown heading ### Download Datais picked up as the page label in the readthedocs navigation sidebar, causing the page to appear as "Download Data" rather than "V3 Hyperparameter Tuning Pipeline".

To reproduce

1. Navigate to the readthedocs page
2. Observe the sidebar navigation label for this page

Expected behavior
The page should be labelled "V3 Hyperparameter Tuning Pipeline" (or similar) in the navigation sidebar, not "Download Data".

Screenshots or logs

System information
A description of your system. Please provide:

• SageMaker Python SDK version:
• Framework name (eg. PyTorch) or algorithm (eg. KMeans):
• Framework version:
• Python version:
• CPU or GPU:
• Custom Docker image (Y/N):

Additional context
Fix: add a title markdown cell as the first cell in doc/source/v3-examples/ml-ops-examples/v3-hyperparameter-tuning-example/v3-hyperparameter-tuning-pipeline.ipynb:

{
  "cell_type": "markdown",
  "id": "intro",
  "metadata": {},
  "source": ["# V3 Hyperparameter Tuning Pipeline"]
}