[1.5] Update pl.po

[Pawonashi]

No changes to the translation yet, syncing the file with my editor first

[AJenbo]

No changes

Please make a second commit with the actual changes you want to make. Just syncing the file isn't useful. The problem with your previous PR is that it hade commits that mixed both file update and text changes.

[Pawonashi]

After the first commit I performed a second one with actual changes and corrections to the translation. After clicking the "open pull request" button I couldn't create a new one, change has been automatically added to this one instead.

[AJenbo]

After clicking the "open pull request" button I couldn't create a new one

You create a pull request by pointing to a branch, make multiple branches if you want to make multiple pull requests. A branch can contain multiple commits.

change has been automatically added to this one instead.

That's exactly what you where supposed to do.

[AJenbo]

@Pawonashi have you applied the same corrections here as in #7750 ?

[Pawonashi]

Not yet, I wanted to wait for approval of these in one file before applying them to another. I'll try to do another commit in the next few hours.