Avoid using the pipe operator just once.

[RudManusachi]

I noticed using different styles in different parts
As stated in this style guide

# not preferred
some_string |> String.downcase()

# preferred
String.downcase(some_string)

now overall code formatting looks more consistent

[shdblowers]

I made a similar PR request to elixir-lang/elixir in the past and it got rejected, I think this one just comes down to personal preference.

[RudolfMan]

@shdblowers, hmm.. I just yesterday was looking into style guide and found this one which is approved by José Valim.

[shdblowers]

I guess the key word in his response is

mostly