better terminology

Co-authored-by: Jubilee <46493976+workingjubilee@users.noreply.github.com>

src/shims/intrinsics.rs

@@ -389,7 +389,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
                         -1 => true,
                         _ =>
                             throw_ub_format!(
-                                "each line of a simd_reduce_any operand must be all-0 or all-1"
+                                "each element of a simd_reduce_any operand must be all-0 or all-1"
                             ),
                     };
                     res = res | val;