fix: confusing wording for billing cycle

docs: update screenshots on readme

includes/i18n/pt.php

@@ -42,6 +42,10 @@ $i18n = [
     "Weekly"          => "Semanal",
     "Monthly"         => "Mensal",
     "Yearly"          => "Anual",
+    "daily"           => "Dia(s)",
+    "weekly"          => "Semana(s)",
+    "monthly"         => "Mês(es)",
+    "yearly"          => "Ano(s)",
     "days"            => "dias",
     "weeks"           => "semanas",
     "months"          => "meses",
@@ -58,7 +62,7 @@ $i18n = [
     "search_logo"     => "Pesquisar logo na internet",
     "web_search"      => "Pesquisa online",
     "currency"        => "Moeda",
-    "billing_cycle"   => "Ciclo de faturação",
+    "payment_every"   => "Pagamento a cada",
     "frequency"       => "Frequencia",
     "Cycle"           => "Ciclo",
     "next_payment"    => "Próximo Pagamento",