adjust i18n

config/locales/i18n.yml

@@ -42,7 +42,7 @@ en: &en
   hello_name: Hello %{name}
   you_are_invited_to_product_name: You are invited to %{product_name}
   you_have_been_invited_to_account_name_product_name_please_sign_up_using_the_link_below_: 'You have been invited to %{account_name} %{product_name}. Please sign up using the link below:'
-  sent_using_product_name_in_testing_mode_html: 'Sent using <a href="%{product_url}">%{product_name}</a> in Testing Mode'
+  sent_using_product_name_in_testing_mode_html: 'Sent using <a href="%{product_url}">%{product_name}</a> in testing mode'
   sent_using_product_name_free_document_signing_html: 'Sent using <a href="%{product_url}">%{product_name}</a> free document signing.'
   sign_documents_with_trusted_certificate_provided_by_docu_seal_your_documents_and_data_are_never_shared_with_docu_seal_p_d_f_checksum_is_provided_to_generate_a_trusted_signature: Sign documents with trusted certificate provided by DocuSeal. Your documents and data are never shared with DocuSeal. PDF checksum is provided to generate a trusted signature.
   you_have_been_invited_to_submit_the_name_form: 'You have been invited to submit the "%{name}" form.'