Quick Fix Alias Type Names

[michaelweilsalesforce]

Related issues
When aliasing Type, the alias is sometimes lost in the reader.

Describe the proposed solution
Quick fix

[codecov]

Codecov Report

Merging #346 into master will decrease coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #346      +/-   ##
==========================================
- Coverage   86.65%   86.63%   -0.02%     
==========================================
  Files         335      335              
  Lines       10763    10763              
  Branches      344      568     +224     
==========================================
- Hits         9327     9325       -2     
- Misses       1436     1438       +2

Impacted Files	Coverage Δ
.../main/scala/com/salesforce/op/readers/Reader.scala	85.71% <100%> (ø)	⬆️
...a/com/salesforce/op/readers/JoinedDataReader.scala	94.23% <100%> (ø)	⬆️
...es/src/main/scala/com/salesforce/op/OpParams.scala	85.71% <0%> (-4.09%)	⬇️

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[tovbinm]

lgtm

[salesforce-cla]

Thanks for the contribution! It looks like @mweilsalesforce is an internal user so signing the CLA is not required. However, we need to confirm this.