fix: add missing redirect (#286)

subj

Author: popzxc

redirects.ts

@@ -115,6 +115,7 @@ const docsReorgRedirects = {
   // Test and debug
   '/build/test-and-debug/hardhat': { redirect: '/zksync-era/guides/testing/testing-with-hardhat' },
   '/build/test-and-debug/foundry': { redirect: '/zksync-era/guides/testing/testing-with-foundry' },
+  '/build/test-and-debug/in-memory-node': { redirect: '/zksync-era/tooling/local-setup/in-memory-node' },
   '/build/test-and-debug': { redirect: '/zksync-era/tooling/local-setup' },
 
   // Dev reference