Remove nlp[complete] requirement from dev requirements

[rwedge]

This PR removes the need to install the "complete" version of nlp_primitives in order to build the docs. The standard version of nlp_primitives will still be needed.

[gsheni]

@rwedge Missing the release notes

[rwedge]

@gsheni I want to fix some docstrings in NLP primitives, do a bugfix NLP release, and then add those primitives to this API Ref

k

[codecov]

Codecov Report

Merging #2109 (8bd5e8b) into main (5615776) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2109   +/-   ##
=======================================
  Coverage   99.20%   99.20%           
=======================================
  Files         143      143           
  Lines       16585    16585           
=======================================
  Hits        16453    16453           
  Misses        132      132           

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