Fix typo in index.md

[edi9999]

Hello,

Just fixing a typo I found in the webpage.

[mergify[bot]]

Merge Protections

Your pull request matches the following merge protections and will not be merged until they are valid.

🟢 Enforce conventional commit

Wonderful, this rule succeeded.

Make sure that we follow https://www.conventionalcommits.org/en/v1.0.0/

• [X] title ~= ^(fix|feat|docs|style|refactor|perf|test|build|ci|chore|revert)(?:\(.+\))?(!)?:

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

:loudspeaker: Thoughts on this report? Let us know!

[PeterStaar-IBM]

@vagenas @ceberam Can you guys look at the test here: this looks like an update on core that produces different docx parsed results.

[vagenas]

Was not able to reproduce the test discrepancy locally, and actually CI is now also green after a rerun.

That means:

1. ✅ This PR can now be merged
2. A possible cause for this nondeterministic behavior could be that the tested Word file contains special characters

👉 To mitigate such issues, I introduce usage of UTF-8 in the test validation utils with https://github.com/docling-project/docling/pull/1691