chore: fix typo in console.warn (#353)

# What ❔

fix typo in server.ts

## Why ❔

WARINING --> WARNING

## Checklist

- [x] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [x] Tests for the changes have been added / updated.
- [x] Documentation comments have been added / updated.
- [x] Code has been formatted via `zk fmt` and `zk lint`.

Co-authored-by: Igor Aleksanov <popzxc@yandex.ru>

infrastructure/zk/src/server.ts

@@ -27,7 +27,7 @@ export async function server(rebuildTree: boolean, uring: boolean, components?:
 
 export async function externalNode(reinit: boolean = false) {
     if (process.env.ZKSYNC_ENV != 'ext-node') {
-        console.warn(`WARINING: using ${process.env.ZKSYNC_ENV} environment for external node`);
+        console.warn(`WARNING: using ${process.env.ZKSYNC_ENV} environment for external node`);
         console.warn('If this is a mistake, set $ZKSYNC_ENV to "ext-node" or other environment');
     }