fix: Missing array type in error messages for type validators containing multiple values

[Stranger6667]

Fixes #216

[codecov]

Codecov Report

Merging #217 (81ca4f7) into master (2c399ac) will increase coverage by 0.06%.
The diff coverage is 100.00%.

❗ Current head 81ca4f7 differs from pull request most recent head 8359633. Consider uploading reports for the commit 8359633 to get more accurate results

@@            Coverage Diff             @@
##           master     #217      +/-   ##
==========================================
+ Coverage   82.77%   82.84%   +0.06%     
==========================================
  Files          53       53              
  Lines        3571     3585      +14     
==========================================
+ Hits         2956     2970      +14     
  Misses        615      615              

Impacted Files	Coverage Δ
jsonschema/src/primitive_type.rs	87.65% <100.00%> (+2.57%)	⬆️

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