estimatedPrintTime is in seconds, not minutes

[eyal0]

The documentation says that the estimated print time should be given in minute. But in practice, when I give it in minutes, the GUI shows an error factor of 60. By supplying it in seconds, the correct value is shown.

So it should probably actually be "in seconds"

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What does this PR do and why is it necessary?

The comment about estimatedPrintTime was wrong, it says minutes but it should be seconds

How was it tested? How can it be tested by the reviewer?

I uploaded a file using a slicer that reports estimatedPrintTime and I observed the the GUI displays seconds, not minutes.

Any background context you want to provide?

What are the relevant tickets if any?

Screenshots (if appropriate)

Further notes