Update README to link to NCCL2 #2

[ROCm/rccl commit: d66fb63679]

projects/rccl/README.md

@@ -1,5 +1,6 @@
-** IMPORTANT NOTE **
-** NCCL1 is no longer maintained/updated and has been replaced by NCCL2, available at http://developer.nvidia.com/nccl. **
+**IMPORTANT NOTE**
+
+**NCCL1 is no longer maintained/updated and has been replaced by NCCL2, available at http://developer.nvidia.com/nccl.**
 
 # NCCL