docs: update pre-commit examples to version 6.1.0

Update outdated version references from 5.13.2 to 6.1.0 in:
- docs/configuration/pre-commit.md (2 occurrences)
- docs/upgrade_guides/5.0.0.md (1 occurrence)

The documentation was showing version 5.13.2 (from December 2023)
while the latest release is 6.1.0 (October 2025).

Related issues will be created for:
- Missing CHANGELOG entries for 6.0.0, 6.0.1, 6.1.0
- Missing upgrade guide for 6.0.0

Signed-off-by: Pranav Lawate <pran.lawate@gmail.com>