formatting nits

clippy_lints/src/methods/mod.rs

@@ -2349,7 +2349,7 @@ fn lint_iter_nth_zero<'tcx>(cx: &LateContext<'tcx>, expr: &hir::Expr<'_>, nth_ar
                 ITER_NTH_ZERO,
                 expr.span,
                 "called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent",
-                "try calling .next() instead of .nth(0)",
+                "try calling `.next()` instead of `.nth(0)`",
                 format!("{}.next()", snippet_with_applicability(cx, nth_args[0].span, "..", &mut applicability)),
                 applicability,
             );