reorder concepts

Author: jarrodwatts

mkdocs.yml

@@ -57,11 +57,11 @@ nav:
         - Get started: cdk/getting-started/index.md
       - Concepts:
         - Layer 2s: cdk/concepts/layer2s.md
+        - L2 Architecture Overview: cdk/concepts/architecture.md
+        - L2 Transaction Lifecycle: cdk/concepts/transaction-lifecycle.md
         - Rollups vs. Validiums: cdk/concepts/rollup-vs-validium.md
         - ZK vs. Optimistic Rollups: cdk/concepts/zk-vs-optimistic.md
         - Batches, Blocks, Transactions: cdk/concepts/blocks.md
-        - L2 Architecture Overview: cdk/concepts/architecture.md
-        - Transaction Lifecycle: cdk/concepts/transaction-lifecycle.md
         - Transaction Finality: cdk/concepts/transaction-finality.md
         - Gas Fees: cdk/concepts/gas-fees.md
         - Bridging & Interoperability: cdk/concepts/bridging.md