[gndoc] Update GN build arguments documentation

Roller-URL: https://cr-buildbucket.appspot.com/build/8724725482654128641
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I785b822bdd12400d077d2a6a691108c22ccb450b
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1193615
Commit-Queue: Docs Roller <docs-roller@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/docs/gen/build_arguments.md b/docs/gen/build_arguments.md
index 7ad2972..ee6902e 100644
--- a/docs/gen/build_arguments.md
+++ b/docs/gen/build_arguments.md
@@ -731,7 +731,7 @@
 Logical version of the current build. If not set, defaults to the timestamp
 of the most recent update.
 
-**Current value for `target_cpu = "arm64"`:** `"8724770787495295953"`
+**Current value for `target_cpu = "arm64"`:** `"8724725482654128641"`
 
 From //out/not-default/args.gn:10
 
@@ -739,7 +739,7 @@
 
 From //build/info/info.gni:17
 
-**Current value for `target_cpu = "riscv64"`:** `"8724770787495295953"`
+**Current value for `target_cpu = "riscv64"`:** `"8724725482654128641"`
 
 From //out/not-default/args.gn:10
 
@@ -747,7 +747,7 @@
 
 From //build/info/info.gni:17
 
-**Current value for `target_cpu = "x64"`:** `"8724770787495295953"`
+**Current value for `target_cpu = "x64"`:** `"8724725482654128641"`
 
 From //out/not-default/args.gn:10