set urls to our readme

Author: Donatas Puidokas

lib/constants/app_constants.dart

@@ -185,9 +185,12 @@ const String FEEDBACK = 'Feedback';
 const String FQA = 'FAQ';
 const String PRIVACY = 'Privacy Policy';
 
-const String FEEDBACK_LINK = 'https://www.google.com';
-const String FQA_LINK = 'https://www.google.com';
-const String PRIVACY_LINK = 'https://www.google.com';
+const String FEEDBACK_LINK =
+    'https://github.com/LeastAuthority/destiny/blob/main/README.md';
+const String FQA_LINK =
+    'https://github.com/LeastAuthority/destiny/blob/main/README.md';
+const String PRIVACY_LINK =
+    'https://github.com/LeastAuthority/destiny/blob/main/README.md';
 
 const String ERR_WRONG_CODE_RECEIVER = """Oops..   
 If you’re sure this is the right code: Either the sender is no longer connected, or the code was already used.