Fixed issue # for QuadReadAcrossDiagonal.int64.test

Author: kcloudy0717

test/WaveOps/QuadReadAcrossDiagonal.int64.test

@@ -240,7 +240,7 @@ DescriptorSets:
 # Bug: https://github.com/llvm/offload-test-suite/issues/986
 # XFAIL: Intel && Vulkan && DXC
 
-# Bug: https://github.com/llvm/offload-test-suite/issues/989
+# Bug: https://github.com/llvm/offload-test-suite/issues/988
 # XFAIL: Metal
 
 # RUN: split-file %s %t