Update docs/release-notes/changelog/v6.0.x.rst

Co-authored-by: Jeff Squyres <[email protected]>
Signed-off-by: Edgar Gabriel <[email protected]>

Author: edgargabriel

docs/release-notes/changelog/v6.0.x.rst

@@ -51,7 +51,7 @@ Open MPI version v6.0.0
 
 - Improvements to collective operations:
 
-  - Added new `xhc` collective component to optimize shared memory collective
+  - Added new ``xhc`` collective component to optimize shared memory collective
     operations using XPMEM.
 
   - Added new `acoll` collective component optimizing single-node