Add dlford.io to "Sites that use Typography.js"

[dlford]

[codecov-io]

Codecov Report

Merging #239 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #239   +/-   ##
=======================================
  Coverage   98.26%   98.26%           
=======================================
  Files          43       43           
  Lines         230      230           
  Branches       17       17           
=======================================
  Hits          226      226           
  Misses          4        4

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