Address custom localized_comment violations

WordPressKit/HTTPAuthenticationAlertController.swift

@@ -36,7 +36,11 @@ open class HTTPAuthenticationAlertController {
 
     private static func controllerForServerTrustChallenge(_ challenge: URLAuthenticationChallenge) -> UIAlertController {
         let title = NSLocalizedString("Certificate error", comment: "Popup title for wrong SSL certificate.")
-        let message = String(format: NSLocalizedString("The certificate for this server is invalid. You might be connecting to a server that is pretending to be “%@” which could put your confidential information at risk.\n\nWould you like to trust the certificate anyway?", comment: ""), challenge.protectionSpace.host)
+        let localizedMessage = NSLocalizedString(
+            "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “%@” which could put your confidential information at risk.\n\nWould you like to trust the certificate anyway?",
+            comment: "Message for when the certificate for the server is invalid. The %@ placeholder will be replaced the a host name, received from the API."
+        )
+        let message = String(format: localizedMessage, challenge.protectionSpace.host)
         let controller =  UIAlertController(title: title, message: message, preferredStyle: .alert)
 
         let cancelAction = UIAlertAction(title: NSLocalizedString("Cancel", comment: "Cancel button label"),

WordPressKit/WordPressOrgXMLRPCValidator.swift

@@ -22,7 +22,10 @@ import Foundation
         case .notWordPressError:
             return NSLocalizedString("That doesn't look like a WordPress site.", comment: "Message to show to user when he tries to add a self-hosted site that isn't a WordPress site.")
         case .mobilePluginRedirectedError:
-            return NSLocalizedString("You seem to have installed a mobile plugin from DudaMobile which is preventing the app to connect to your blog", comment: "")
+            return NSLocalizedString(
+                "You seem to have installed a mobile plugin from DudaMobile which is preventing the app to connect to your blog",
+                comment: "Error messaged show when a mobile plugin is redirecting traffict to their site, DudaMobile in particular"
+            )
         case .invalid:
             return NSLocalizedString("Couldn't connect to the WordPress site. There is no valid WordPress site at this address. Check the site address (URL) you entered.", comment: "Error message shown a URL points to a valid site but not a WordPress site.")
         case .blocked: