What is your issue?

Go to e.g. https://docs.xarray.dev/en/stable/contribute/contributing.html#install-pre-commit-hooks
There should be a code block with instructions.
I tested both firefox and chrome under linux and it looks like this:

After "This is done by:" there should be a code block, as can be seen in the source: https://github.com/pydata/xarray/blob/main/doc/contribute/contributing.rst#install-pre-commit-hooks