cppgc: Fix include brackets.

Signed-off-by: Piotr Sikora <piotrsikora@google.com>
Change-Id: Iee9005f1dd934fc6b81c1a8eb3d8d6bfb21b4bdc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3334336Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78354}

src/heap/cppgc/default-platform.cc

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <include/cppgc/default-platform.h>
+#include "include/cppgc/default-platform.h"
 
 namespace cppgc {