Fix a typo in testing/resources/pixel/type3.in

The parent of the Page dictionary is the Pages dictionary, not the
Catalog.

Change-Id: I2f093972a0b94be5aae75d029420b5715ad36c97
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/120392
Reviewed-by: Thomas Sepez <tsepez@google.com>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/testing/resources/pixel/type3.in b/testing/resources/pixel/type3.in
index bfd7966..7053905 100644
--- a/testing/resources/pixel/type3.in
+++ b/testing/resources/pixel/type3.in
@@ -12,7 +12,7 @@
 endobj
 {{object 3 0}} <<
   /Type /Page
-  /Parent 1 0 R
+  /Parent 2 0 R
   /Contents 4 0 R
   /MediaBox [0 0 200 150]
   /Resources <<