Fix AMD64 APM revision number in a comment

client/capture_context_mac_test.cc

Index: client/capture_context_mac_test.cc
diff --git a/client/capture_context_mac_test.cc b/client/capture_context_mac_test.cc
index 865fa44dbed22ad0226c842914a6c5b9a01aefd3..53d08e264b482d761cdd1b925aafde0cd3f3f6cf 100644
--- a/client/capture_context_mac_test.cc
+++ b/client/capture_context_mac_test.cc
@@ -53,7 +53,7 @@ void SanityCheckContext(NativeCPUContext* context) {
   // set of reserved bits are 1, 3, 5, 15, and 22 and higher. See Intel Software
   // Developer’s Manual, Volume 1: Basic Architecture (253665-051), 3.4.3
   // “EFLAGS Register”, and AMD Architecture Programmer’s Manual, Volume 2:
-  // System Programming (24593-2.53), 3.1.6 “RFLAGS Register”.
+  // System Programming (24593-3.24), 3.1.6 “RFLAGS Register”.
 #if defined(ARCH_CPU_X86)
   EXPECT_EQ(0u, context->uts.ts32.__cs & ~0xffff);
   EXPECT_EQ(0u, context->uts.ts32.__ds & ~0xffff);