docs: update ISR self-hosting example code (vercel#74211)

Co-authored-by: JJ Kasper <jj@jjsweb.site>

docs/01-app/03-building-your-application/10-deploying/index.mdx

@@ -220,11 +220,15 @@ module.exports = class CacheHandler {
     // Iterate over all entries in the cache
     for (let [key, value] of cache) {
       // If the value's tags include the specified tag, delete this entry
-      if (value.tags.some((tag) => tags.include(tag))) {
+      if (value.tags.some((tag) => tags.includes(tag))) {
         cache.delete(key)
       }
     }
   }
+
+  // If you want to have temporary in memory cache for a single request that is reset
+  // before the next request you can leverage this method
+  public resetRequestCache() {}
 }
 ```
 
@@ -310,50 +314,51 @@ If you want to use `after` on custom infrastructure, check your provider documen
 <details id="after-serverless">
   <summary>Reference: supporting `after` for serverless platforms</summary>
   Using `after` in a serverless context requires waiting for asynchronous tasks to finish after the response has been sent. In Next.js and Vercel, this is achieved using a primitive called `waitUntil(promise)`, which extends the lifetime of a serverless invocation until all promises passed to [`waitUntil`](https://vercel.com/docs/functions/functions-api-reference#waituntil) have settled.
-
-  If you want your users to be able to run `after`, you will have to provide your implementation of `waitUntil` that behaves in an analogous way.
-
-  When `after` is called, Next.js will access `waitUntil` like this:
-
-  ```jsx
-  const RequestContext = globalThis[Symbol.for('@next/request-context')]
-  const contextValue = RequestContext?.get()
-  const waitUntil = context?.waitUntil
-  ```
-  
-  Which means that `globalThis[Symbol.for('@next/request-context')]` is expected to contain an object like this:
-  
-  ```tsx
-  type NextRequestContext = {
-    get(): NextRequestContextValue | undefined
-  }
-
-  type NextRequestContextValue = {
-    waitUntil?: (promise: Promise<any>) => void
-  }
-  ```
-  
-  Here is an example of the implementation.
-  
-  ```tsx
-  import { AsyncLocalStorage } from 'node:async_hooks'
-
-  const RequestContextStorage = new AsyncLocalStorage<NextRequestContextValue>()
-
-  // Define and inject the accessor that next.js will use
-  const RequestContext: NextRequestContext = {
-    get() {
-      return RequestContextStorage.getStore()
-    },
-  }
-  globalThis[Symbol.for('@next/request-context')] = RequestContext
-
-  const handler = (req, res) => {
-    const contextValue = { waitUntil: YOUR_WAITUNTIL }
-    // Provide the value
-    return RequestContextStorage.run(contextValue, () => nextJsHandler(req, res))
-  }
-  ```
+
+If you want your users to be able to run `after`, you will have to provide your implementation of `waitUntil` that behaves in an analogous way.
+
+When `after` is called, Next.js will access `waitUntil` like this:
+
+```jsx
+const RequestContext = globalThis[Symbol.for('@next/request-context')]
+const contextValue = RequestContext?.get()
+const waitUntil = context?.waitUntil
+```
+
+Which means that `globalThis[Symbol.for('@next/request-context')]` is expected to contain an object like this:
+
+```tsx
+type NextRequestContext = {
+  get(): NextRequestContextValue | undefined
+}
+
+type NextRequestContextValue = {
+  waitUntil?: (promise: Promise<any>) => void
+}
+```
+
+Here is an example of the implementation.
+
+```tsx
+import { AsyncLocalStorage } from 'node:async_hooks'
+
+const RequestContextStorage = new AsyncLocalStorage<NextRequestContextValue>()
+
+// Define and inject the accessor that next.js will use
+const RequestContext: NextRequestContext = {
+  get() {
+    return RequestContextStorage.getStore()
+  },
+}
+globalThis[Symbol.for('@next/request-context')] = RequestContext
+
+const handler = (req, res) => {
+  const contextValue = { waitUntil: YOUR_WAITUNTIL }
+  // Provide the value
+  return RequestContextStorage.run(contextValue, () => nextJsHandler(req, res))
+}
+```
+
 </details>
 
 </AppOnly>