Update comment

Author: Lily Orth-Smith

mlir/include/mlir/Conversion/Passes.td

@@ -1399,7 +1399,8 @@ def ConvertVectorToLLVMPass : Pass<"convert-vector-to-llvm"> {
            "Use the preferred alignment of a vector type in load/store "
            "operations instead of the alignment of the element type of the "
            "memref. This flag is intended for use with hardware which requires" 
-           "vector alignment.">,
+           "vector alignment, or in application contexts where it is known all "
+           "vector access are naturally aligned. ">,
     Option<"amx", "enable-amx",
            "bool", /*default=*/"false",
            "Enables the use of AMX dialect while lowering the vector "