Fix #2550 Fix WDQS link

[fnielsen]

Now includes a hashmark in the base URL for the Wikidata Query Service.

Fixes #2550

Description

Add hash mark to default parameter

Caveats

Please list anything which has been left out of this PR or which should be considered before this PR is accepted
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• Breaking change (fix or feature that would cause existing functionality to not work as expected)
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Testing

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• http://127.0.0.1:8100/author/Q18016466
• http://127.0.0.1:8100/work/

Checklist

• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have not used code from external sources without attribution
• I have considered accessibility in my implementation
• There are no remaining debug statements (print, console.log, ...)