warning: Jason.decode!/1 is undefined (module Jason is not available or is yet to be defined)

[kianmeng]

Warning when generating the doc.

$ MIX_ENV=docs mix docs           
Compiling 2 files (.ex)                               
warning: Jason.decode!/1 is undefined (module Jason is not available or is yet to be defined)
  lib/mix/tasks/slugify.ex:26: Mix.Tasks.Slugify.read_from_priv!/1

Generated slugify app

[MatheusMuriel]

Hello, im particing of Hacktoberfest \o/
I will work on this issue ok?
If you want can assign it to me