OrderDetailsViewController: Fixing Typo

Author: jleandroperez

WooCommerce/Classes/ViewRelated/Orders/OrderDetails/OrderDetailsViewController.swift

@@ -596,7 +596,7 @@ extension OrderDetailsViewController: MFMailComposeViewControllerDelegate {
 
     private func sendEmail(to email: String) {
         // Workaround: MFMailCompose isn't *FULLY* picking up UINavigationBar's WC's appearance. Title / Buttons look awful.
-        // We're falling back to iOS's default appearence
+        // We're falling back to iOS's default appearance
         UINavigationBar.applyDefaultAppearance()
 
         // Composer