fix undeterminist detected loaders

[guillaumeLamanda]

Fix the issue I ran into when upgrading my project to NextJS 10.

I Added more information in my comment on #219.

Not sure it totally close it, but the initial comment on the issue is unclear...

About the change, I think the path resolution was too restrictive and too sharp specific.
I updated the adapter condition and adapter path resolution. All checks are OK.

[codecov-io]

Codecov Report

Merging #220 (bfc875e) into master (fe31e5c) will not change coverage.
The diff coverage is 50.00%.

@@           Coverage Diff           @@
##           master     #220   +/-   ##
=======================================
  Coverage   88.42%   88.42%           
=======================================
  Files          13       13           
  Lines         190      190           
  Branches       46       46           
=======================================
  Hits          168      168           
  Misses         16       16           
  Partials        6        6           

Impacted Files	Coverage Δ
lib/loaders/responsive-loader.js	72.72% <50.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update fe31e5c...bfc875e. Read the comment docs.