wr-calibration: Two links need a fix

On https://ohwr.org/project/wr-calibration/wikis/Electrical-absolute-calibration

Two links need a fix:

• "White Rabbit SFP LoopBack Enclosure" points to https://www.ohwr.org/4697
• "White Rabbit SFP Short Enclosure" points to https://www.ohwr.org/4698

I have to clue how to fix them