https://en.wikipedia.org/wiki/National_Airline_History_Museum
Edit links => https://www.wikidata.org/wiki/Special:ItemByTitle/enwiki/National Airline History Museum
Which when copied out from your browser becomes the uglier https://www.wikidata.org/wiki/Special:ItemByTitle/enwiki/National%20Airline%20History%20Museum
Like everything in MediaWiki, this link should be in db key form - https://www.wikidata.org/wiki/Special:ItemByTitle/enwiki/National_Airline_History_Museum
Version: master
Severity: trivial