chore: fix broken training documentation links

[ParasSalonia]

Fixes #1707

• This PR fixes broken documentation links in the SDK developer training files.

[coderabbitai]

Walkthrough

This PR corrects broken documentation links in SDK developer training files (query and setup), updates several relative and external link targets, and adds a changelog "Fixed" entry documenting the documentation fixes.

Changes

Cohort / File(s)	Summary
Changelog Entry CHANGELOG.md	Added a "Fixed" changelog entry for corrected documentation links; removed three chore lines and a stray empty line.
Query Documentation Links docs/sdk_developers/training/query.md	Updated example links from ../../examples/... to ../../../examples/... to correct relative paths to example scripts.
Setup Documentation Links docs/sdk_developers/training/setup/05_network_client_setup.md, docs/sdk_developers/training/setup/06_importing_hiero_files.md	Fixed "Extra Support" and reference links to use correct relative paths; replaced local Pylance doc link with an external VS Code Marketplace URL and adjusted examples/project structure link targets.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'chore: fix broken training documentation links' accurately and clearly summarizes the main change in the PR—correcting broken documentation links in SDK training files.
Description check	✅ Passed	The description references issue #1707 and explains that the PR fixes broken documentation links in SDK developer training files, which directly relates to the changeset.
Linked Issues check	✅ Passed	The PR correctly addresses all objectives from issue #1707: updated relative paths in docs/sdk_developers/training/query.md, fixed link in docs/sdk_developers/training/setup/05_network_client_setup.md, and fixed links in docs/sdk_developers/training/setup/06_importing_hiero_files.md.
Out of Scope Changes check	✅ Passed	Changes are limited to the specified files and link corrections. The CHANGELOG.md entry documents a fix for broken documentation links without unrelated modifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

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• Create PR with unit tests
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[coderabbitai]

Actionable comments posted: 3

[tech0priyanshu]

Hi @ParasSalonia , thanks for the contribution! The link reference needs to be updated so that it redirects to the correct file.

[github-actions]

Hi, this is MergeConflictBot.
Your pull request cannot be merged because it contains merge conflicts.

Please resolve these conflicts locally and push the changes.

Quick Fix for CHANGELOG.md Conflicts

If your conflict is only in CHANGELOG.md, you can resolve it easily using the GitHub web editor:

1. Click on the "Resolve conflicts" button in the PR
2. Accept both changes (keep both changelog entries)
3. Click "Mark as resolved"
4. Commit the merge

For all other merge conflicts, please read:

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Thank you for contributing!

[exploreriii]

hi @ParasSalonia
This is great!

But your changelog has some mistakes

Please can you re-add line 253
https://github.com/hiero-ledger/hiero-sdk-python/pull/1737/changes

can you also delete the fixed section in line 255 as its duplicted

Then LGTM thank you

[coderabbitai]

Actionable comments posted: 1

[parvninama]

LGTM ,
Thank you for your contribution :)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@           Coverage Diff           @@
##             main    #1737   +/-   ##
=======================================
  Coverage   93.25%   93.25%           
=======================================
  Files         141      141           
  Lines        9061     9061           
=======================================
  Hits         8450     8450           
  Misses        611      611           

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