Fix trailing newline and format code

app/lib/firehose/checks/no_conn_shadowing.ex

@@ -24,7 +24,11 @@ defmodule Firehose.Checks.NoConnShadowing do
     |> Enum.reverse()
   end
 
-  defp traverse({:=, meta, [{:conn, _, _}, {verb, _, [{:conn, _, _} | _]}]} = ast, issues, issue_meta)
+  defp traverse(
+         {:=, meta, [{:conn, _, _}, {verb, _, [{:conn, _, _} | _]}]} = ast,
+         issues,
+         issue_meta
+       )
        when verb in @http_verbs do
     issue = issue_for(issue_meta, meta[:line], verb)
     {ast, [issue | issues]}
@@ -37,7 +41,8 @@ defmodule Firehose.Checks.NoConnShadowing do
   defp issue_for(issue_meta, line_no, verb) do
     format_issue(
       issue_meta,
-      message: "Conn shadowing detected (`conn = #{verb}(conn, ...)`). Run `./refactor_conn_aliasing.sh <file>` to fix.",
+      message:
+        "Conn shadowing detected (`conn = #{verb}(conn, ...)`). Run `./refactor_conn_aliasing.sh <file>` to fix.",
       line_no: line_no
     )
   end