Fix broken strings

Fixes #5218
// FREEBIE

res/values/strings.xml

@@ -529,7 +529,7 @@
     <string name="VerifyIdentityActivity_you_do_not_have_an_identity_key">You do not have an identity key.</string>
     <string name="VerifyIdentityActivity_recipient_has_no_identity_key">Recipient has no identity key.</string>
     <string name="VerifyIdentityActivity_recipient_has_no_identity_key_exclamation">Recipient has no identity key!</string>
-    <string name="VerifyIdentityActivity_scan_contacts_qr_code">Scan contact's QR code</string>
+    <string name="VerifyIdentityActivity_scan_contacts_qr_code">Scan contact\'s QR code</string>
     <string name="VerifyIdentityActivity_display_your_qr_code">Display your QR code</string>
     <string name="VerifyIdentityActivity_warning_the_scanned_key_does_not_match_please_check_the_fingerprint_text_carefully">WARNING, the scanned key DOES NOT match! Please check the fingerprint text carefully.</string>
     <string name="VerifyIdentityActivity_not_verified_exclamation">NOT Verified!</string>
@@ -539,7 +539,7 @@
 
     <!-- ViewIdentityActivity -->
     <string name="ViewIdentityActivity_you_do_not_have_an_identity_key">You do not have an identity key.</string>
-    <string name="ViewIdentityActivity_scan_contacts_qr_code">Scan contact's QR code</string>
+    <string name="ViewIdentityActivity_scan_contacts_qr_code">Scan contact\'s QR code</string>
     <string name="ViewIdentityActivity_display_your_qr_code">Display your QR code</string>
     <string name="ViewIdentityActivity_warning_the_scanned_key_does_not_match_exclamation">WARNING, the scanned key DOES NOT match!</string>
     <string name="ViewIdentityActivity_not_verified_exclamation">NOT verified!</string>
@@ -1119,7 +1119,7 @@
     <!-- key_scanning -->
     <string name="key_scanning__menu_compare">Compare</string>
     <string name="key_scanning__menu_display_your_qr_code">Display your QR code</string>
-    <string name="key_scanning__menu_scan_contacts_qr_code">Scan contact's QR code</string>
+    <string name="key_scanning__menu_scan_contacts_qr_code">Scan contact\'s QR code</string>
 
     <!-- text_secure_normal -->
     <string name="text_secure_normal__menu_new_message">New message</string>