Fix typo in fa.po

[PooyaEimandar]

Fix typo in fa.po

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[moaminsharifi]

Seems write, is that only typo in the file?

[gribozavr]

@PooyaEimandar Thank you for the fixes! Could you sign the Google CLA as explained by the bot comment above? We can't merge the PR before then.

@moaminsharifi Thank you for reviewing the changes! Since the changes are correct and are a clear improvement, I'm not going to block merging the PR on auditing the whole file. Further fixes can be delivered in follow-up PRs.

[PooyaEimandar]

@PooyaEimandar Thank you for the fixes! Could you sign the Google CLA as explained by the bot comment above? We can't merge the PR before then.

@gribozavr You're welcome, It's done.