Schema fix

[SteelWagstaff]

Remove bib prefix from schema.org references, per #1749. Rationale:

Until April 2019, we relied primarily on the 'hosted extensions' mechanism that used hosted subdomains of schema.org (such as bib.schema.org for the bibliography extension and autos.schema.org for the autos extension). Going forward, the content of these hosted extensions are being folded into schema.org, although each will retain an "entry point" page as before. (source)[https://schema.org/docs/extension.html]

[codecov]

Codecov Report

Merging #1750 into dev will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##                dev    #1750   +/-   ##
=========================================
  Coverage     65.83%   65.83%           
  Complexity     4731     4731           
=========================================
  Files           124      124           
  Lines         20623    20623           
=========================================
  Hits          13578    13578           
  Misses         7045     7045

[codecov]

Codecov Report

Merging #1750 into dev will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##                dev    #1750   +/-   ##
=========================================
  Coverage     65.83%   65.83%           
  Complexity     4731     4731           
=========================================
  Files           124      124           
  Lines         20623    20623           
=========================================
  Hits          13578    13578           
  Misses         7045     7045