Fix typo in unknown service provider error message

[ryanlntn]

No description provided.

[codecov]

Codecov Report

Merging #50 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master      #50   +/-   ##
=======================================
  Coverage   95.59%   95.59%           
=======================================
  Files          17       17           
  Lines         227      227           
  Branches       43       43           
=======================================
  Hits          217      217           
  Misses         10       10

Impacted Files	Coverage Δ
lib/detect.js	92.85% <0%> (ø)	✅

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