WDQS-compatible titles

[egonw]

Fixes #2304

Description

Removes the space so that the #title: information can be used by the WDQS.

Caveats

While not aware of it, I am not 100% sure there is not a downstream use of the space.

Check any of the following which apply:

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
  • I have made corresponding changes to the documentation
• This change requires new dependencies (please list)

Testing

• See the example in is the # title in the SPARQL queries meant to be used by the WDQS? #2304

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, ...)