test: Add test to proof docblock is being used when type hint is array

[DannyvdSluijs]

This PR adds:

• An additional test to proof dokblocks are being used when type hint is array.

This will resolve #3

[codecov]

Codecov Report

Merging #49 (87509fd) into master (06f0b06) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 87509fd differs from pull request most recent head a8339ff. Consider uploading reports for the commit a8339ff to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master      #49   +/-   ##
=========================================
  Coverage     89.07%   89.07%           
  Complexity       58       58           
=========================================
  Files             8        8           
  Lines           119      119           
=========================================
  Hits            106      106           
  Misses           13       13           

Impacted Files	Coverage Δ
lib/Dispatcher.php	88.88% <100.00%> (ø)