Update README to link to NCCL2 part 3

[ROCm/rccl commit: 4a33f66e27]

projects/rccl/README.md

@@ -1,6 +1,7 @@
 **IMPORTANT NOTE**
 
-**NCCL1 is no longer maintained/updated and has been replaced by NCCL2, available at http://developer.nvidia.com/nccl.**
+**NCCL1 is no longer maintained/updated and has been replaced by NCCL2, available at**
+**http://developer.nvidia.com/nccl.**
 
 # NCCL