docs: anonymise project asset names in source comments

Measured figures are kept; only the studio-specific level and asset
names are generalised, and the Perforce rationale is reworded to
describe the class of setups rather than this one project.

Co-Authored-By: Claude Code <noreply@anthropic.com>

Source/AssetUsageAuditCore/Public/IndirectReferenceScanner.h

@@ -9,7 +9,7 @@
  */
 struct FIndirectReference
 {
-    /** Package name the literal resolved to, e.g. /Game/Space/Core/GameModes/BP_FirstPersonGameMode. */
+    /** Package name the literal resolved to, e.g. /Game/Core/GameModes/BP_GameMode. */
     FName PackageName;
 
     /** Absolute path of the file the literal was found in. */
@@ -28,7 +28,7 @@ struct FIndirectReference
  * Finds asset paths referenced from text rather than from a package.
  *
  * This exists because of a concrete, measured failure mode on this project: Config/DefaultEngine.ini
- * names BP_FirstPersonGameMode, BP_MenuSystemGameInstance, RefinedMenuMap and Gyms_Geoda as plain
+ * names BP_GameMode, BP_MenuGameInstance, RefinedMenuMap and Gyms_Geoda as plain
  * strings. No asset references them, so the Asset Registry reports zero referencers and a naive
  * audit calls the project's GameMode unused.
  *