Update mkdocs.yml

Author: EmpieichO

mkdocs.yml

@@ -89,7 +89,8 @@ nav:
         - Quickly test a running stack: cdk/how-to/quick-test-stack.md
         - Connect to CDK testnets: cdk/how-to/connect-testnet.md
       - Architecture:
-        - High level views: cdk/architecture/high-level-views.md
+        - CDK FEP high level view: cdk/architecture/high-level-views.md
+        - CDK PP high level view: cdk/architecture/cdk-pp-highlevel-arch.md
         - CDK rollup: cdk/architecture/cdk-zkevm.md
         - CDK validium: cdk/architecture/cdk-validium.md
         - Staking the Bridge (STB): cdk/architecture/staking-the-bridge.md