Fix grammar

deltachat-ios/Info.plist

@@ -41,7 +41,7 @@
 	<key>NSCameraUsageDescription</key>
 	<string>This is used to take photos and videos or scan QR codes.</string>
 	<key>NSContactsUsageDescription</key>
-	<string>This is used to find your contacts using Delta Chat.</string>
+	<string>This is used to find your contacts who using Delta Chat.</string>
 	<key>NSMicrophoneUsageDescription</key>
 	<string>This is used to send your voice.</string>
 	<key>NSPhotoLibraryUsageDescription</key>

tools/untranslated.xml

@@ -5,7 +5,7 @@
     <string name="import_contacts">Import device contacts</string>
     <string name="import_contacts_message">To chat with contacts from your device open Settings and enable Contacts.</string>
     <string name="INFOPLIST.NSCameraUsageDescription">This is used to take photos and videos or scan QR codes.</string>
-    <string name="INFOPLIST.NSContactsUsageDescription">This is used to find your contacts using Delta Chat.</string>
+    <string name="INFOPLIST.NSContactsUsageDescription">This is used to find your contacts who using Delta Chat.</string>
     <string name="INFOPLIST.NSMicrophoneUsageDescription">This is used to send your voice.</string>
     <string name="INFOPLIST.NSPhotoLibraryUsageDescription">This is used to share your photos and videos or set up a profile picture.</string>
 </resources>