fix: point packages to MDC Web /dist ES5 files

[moog16]

fixes #175

[codecov-io]

Codecov Report

Merging #182 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #182   +/-   ##
=======================================
  Coverage   95.82%   95.82%           
=======================================
  Files          21       21           
  Lines         719      719           
  Branches       67       67           
=======================================
  Hits          689      689           
  Misses         30       30

Impacted Files	Coverage Δ
packages/text-field/icon/index.js	100% <ø> (ø)	⬆️
packages/text-field/helper-text/index.js	100% <ø> (ø)	⬆️
packages/chips/Chip.js	56.66% <ø> (ø)	⬆️
packages/line-ripple/index.js	100% <ø> (ø)	⬆️
packages/notched-outline/index.js	100% <ø> (ø)	⬆️
packages/top-app-bar/index.js	100% <ø> (ø)	⬆️
packages/text-field/index.js	100% <ø> (ø)	⬆️
packages/floating-label/index.js	100% <ø> (ø)	⬆️
packages/ripple/index.js	95.87% <ø> (ø)	⬆️

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