docs(node-sdk): fix batch interval default

packages/node-sdk/README.md

@@ -156,7 +156,7 @@ The batch buffer is configurable through the client options:
 const client = new ReflagClient({
   batchOptions: {
     maxSize: 100, // Maximum number of events to batch
-    intervalMs: 1000, // Flush interval in milliseconds
+    intervalMs: 10000, // Flush interval in milliseconds (default: 10000)
   },
 });
 ```

packages/node-sdk/src/types.ts

@@ -590,7 +590,7 @@ export type BatchBufferOptions<T> = {
    * The interval in milliseconds at which the buffer is flushed.
    * @remarks
    * If `0`, the buffer is flushed only when `maxSize` is reached.
-   * @defaultValue `1000`
+   * @defaultValue `10000`
    **/
   intervalMs?: number;