Update attributions.rst

[ROCm/rccl commit: 8486554e4b]

projects/rccl/docs/source/attributions.rst

@@ -40,8 +40,8 @@ under subcontract 7078610 with Lawrence Berkeley National Laboratory.
 
 This code also includes files from the NVIDIA Tools Extension SDK project.
 
-See:
+For more information and license details, see
+
+ https://github.com/NVIDIA/NVTX
 
-   https://github.com/NVIDIA/NVTX
 
-for more information and license details.