Fix typo in "Patterns and Guards.md" (#9836)
Fix typo in "Patterns and Guards.md" (#9836)


ggcampinho/elixir,elixir-lang/elixir,pedrosnk/elixir,kelvinst/elixir,kelvinst/elixir,pedrosnk/elixir,michalmuskala/elixir,kimshrier/elixir,kimshrier/elixir,joshprice/elixir,ggcampinho/elixir