Doc "copy" feature is not robust to ellipses

[JPelamatti]

What happened?

When code snippets in the documentation contain ellipses ("..."), the copy feature ignores the associated lines. See for the example the snippets in the following page

How to reproduce the issue?

Try copying code from https://openturns.github.io/openturns/master/user_manual/_generated/openturns.UserDefinedCovarianceModel.html

Version

1.23

Operating System

all

Installation media

other

Additional Context

No response