Fix schema deserialization 'type' value output

[wyfo]

[codecov-commenter]

Codecov Report

Merging #386 (95d697a) into v0.17 (8402fdb) will increase coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            v0.17     #386      +/-   ##
==========================================
+ Coverage   86.18%   86.20%   +0.01%     
==========================================
  Files          67       67              
  Lines        5865     5864       -1     
  Branches     1223     1222       -1     
==========================================
  Hits         5055     5055              
+ Misses        592      591       -1     
  Partials      218      218              

Impacted Files	Coverage Δ
apischema/json_schema/types.py	95.00% <100.00%> (+2.31%)	:arrow_up:

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