Fix new credo warnings

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/graphql/api/utils.ex

@@ -21,7 +21,7 @@ defmodule Mobilizon.GraphQL.API.Utils do
     text
     |> Formatter.html_escape("text/plain")
     |> Formatter.linkify(options)
-    |> (fn {text, mentions, tags} -> {String.replace(text, ~r/\r?\n/, "<br>"), mentions, tags} end).()
+    |> inject_new_lines()
   end
 
   def format_input(text, "text/html", options) do
@@ -30,6 +30,10 @@ defmodule Mobilizon.GraphQL.API.Utils do
     |> Formatter.linkify(options)
   end
 
+  defp inject_new_lines({text, mentions, tags}) do
+    {String.replace(text, ~r/\r?\n/, "<br>"), mentions, tags}
+  end
+
   @doc """
   Use the data-media-id attributes to extract media from body text
   """