Correct Identification of UNRELEASED in changelog workflow bot

[exploreriii]

We have a workflow bot that identifies if a changelog entry is in the correct section, UNRELEASED
.github/workflows/pr-checks.yml

This was marked as not correct:

[Unreleased]

Added

• Add examples/tokens/token_create_transaction_pause_key.py example demonstrating token pause/unpause behavior and pause key usage (feat(examples): add pause key example for token create #833

We need to apply a fix

PR reference:
https://github.com/hiero-ledger/hiero-sdk-python/actions/runs/19771141012/job/56655323512?pr=833

[exploreriii]

Closed as completed in https://github.com/hiero-ledger/hiero-sdk-python/pulls?q=is%3Apr+is%3Aclosed