Closes #136 set up styling links and spelling checks

[jeffreyad]

Adds styling, links, and spelling checks

[codecov]

Codecov Report

❌ Patch coverage is 85.93156% with 185 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.77%. Comparing base (c13c3ec) to head (615da61).

Files with missing lines	Patch %	Lines
R/spec_builder.R	76.97%	99 Missing ⚠️
R/metacore.R	89.88%	27 Missing ⚠️
R/validators.R	87.06%	26 Missing ⚠️
R/DatasetMeta.R	57.50%	17 Missing ⚠️
R/xml_builders.R	94.86%	15 Missing ⚠️
R/xml_helpers.R	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #137      +/-   ##
==========================================
- Coverage   85.86%   85.77%   -0.09%     
==========================================
  Files           9        9              
  Lines        1224     1350     +126     
==========================================
+ Hits         1051     1158     +107     
- Misses        173      192      +19     

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[bms63]

So in!! LGTM @LiamHobby !!