Fix Credo Readability (strict)

- Max line length, implicit try, alias order, zero-arity defs
- String sigils, long comments split; redundant blank lines fixed

test/mv/membership_fees/membership_fee_cycle_policies_test.exs

@@ -8,8 +8,8 @@ defmodule Mv.MembershipFees.MembershipFeeCyclePoliciesTest do
   """
   use Mv.DataCase, async: false
 
-  alias Mv.MembershipFees
   alias Mv.Membership
+  alias Mv.MembershipFees
 
   setup do
     system_actor = Mv.Helpers.SystemActor.get_system_actor()