docs(extraction): pin UDF examples link to 26.03 branch

[kheiss-uwzoo]

Summary

• Fix the last NVBugs 6179241 broken GitHub link on the 26.3.0 extraction docs by pointing the UDF examples README at \NeMo-Retriever\ branch \26.03\ instead of \main\ (404).

Test plan

• Confirm \https://github.com/NVIDIA/NeMo-Retriever/blob/26.03/examples/udfs/README.md\ returns 200
• Rebuild/publish 26.3.0 extraction docs and verify the link on \user-defined-functions\

[greptile-apps]

Greptile Summary

This PR fixes a broken documentation link in the extraction user-defined-functions guide by pinning the UDF examples README URL from the main branch to the 26.03 branch, resolving the 404 reported in NVBugs 6179241.

• Changes one URL in docs/docs/extraction/user-defined-functions.md, swapping /blob/main/ for /blob/26.03/ in the "NV-Ingest UDF Examples" related-topics link.

Confidence Score: 5/5

Safe to merge — single URL change in a documentation file with no runtime code impact.

The change is a one-line URL correction in a Markdown doc. Pinning to the 26.03 branch matches the base branch of this PR, and the test plan explicitly includes verifying the target URL returns 200.

No files require special attention.

Important Files Changed

Filename	Overview
docs/docs/extraction/user-defined-functions.md	Single-line URL fix: pins the UDF examples README link from main to 26.03 branch to resolve a 404.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[user-defined-functions.md
Related Topics section] --> B{UDF Examples link}
    B -- "before: /blob/main/" --> C["❌ 404 Not Found
github.com/.../blob/main/examples/udfs/README.md"]
    B -- "after: /blob/26.03/" --> D["✅ 200 OK
github.com/.../blob/26.03/examples/udfs/README.md"]

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
flowchart TD
    A[user-defined-functions.md
Related Topics section] --> B{UDF Examples link}
    B -- "before: /blob/main/" --> C["❌ 404 Not Found
github.com/.../blob/main/examples/udfs/README.md"]
    B -- "after: /blob/26.03/" --> D["✅ 200 OK
github.com/.../blob/26.03/examples/udfs/README.md"]

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