README: Update to reflect RFC 7845 and 8251

README

@@ -29,7 +29,7 @@ additional debugging data and cannot support seeking.
 
 Opus stored in files should use the Ogg encapsulation for Opus which is
 described at:
- https://wiki.xiph.org/OggOpus
+ https://tools.ietf.org/html/rfc7845
 
 An opus-tools package is available which provides encoding and decoding of
 Ogg encapsulated Opus files and includes a number of useful features.
@@ -125,13 +125,13 @@ To run the integrated tests:
 
 There is also collection of standard test vectors which are not
 included in this package for size reasons but can be obtained from:
-https://opus-codec.org/testvectors/opus_testvectors.tar.gz
+https://opus-codec.org/docs/opus_testvectors-rfc8251.tar.gz
 
 To run compare the code to these test vectors:
 
-    % curl -OL https://opus-codec.org/testvectors/opus_testvectors.tar.gz
-    % tar -zxf opus_testvectors.tar.gz
-    % ./tests/run_vectors.sh ./ opus_testvectors 48000
+    % curl -OL https://opus-codec.org/docs/opus_testvectors-rfc8251.tar.gz
+    % tar -zxf opus_testvectors-rfc8251.tar.gz
+    % ./tests/run_vectors.sh ./ opus_newvectors 48000
 
 == Portability notes ==