Link checker ignore mathworks sign

[cyschneck]

PR Summary

The mathworks site does not seem to agree with the link checker, so while the link works as expected this is the second time it has thrown a 403 Client Error when accessing the link for the Matlab sign function

This PR adds this link to the list of links to ignore in conf.py

(ncl/ncl_entries/general_applied_math: line 770004) broken https://www.mathworks.com/help/matlab/ref/double.sign.html - 403 Client Error: Forbidden for url: https://www.mathworks.com/help/matlab/ref/double.sign.html

Related Tickets & Documents

Closes #160

PR Checklist

General

• PR includes a summary of changes
• Link relevant issues, make one if none exist

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Meowdy! See your PR preview:
🔍 Git commit SHA: e9590a4
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[anissa111]

I don't love adding links to ignore in case they break in the future, but I don't have a reasonable better suggestion here for now.

[cyschneck]

I don't love adding links to ignore in case they break in the future, but I don't have a reasonable better suggestion here for now.

Agreed, but a similar alternative link to the sign function in matlab throws the same error. I suspect it has something to do with how mathworks set up their website