Fix typos in lazy.md and cache.md (#7141)

Author: kihyeoon

src/content/reference/react/cache.md

@@ -226,7 +226,7 @@ By caching a long-running data fetch, you can kick off asynchronous work prior t
 ```jsx [[2, 6, "await getUser(id)"], [1, 17, "getUser(id)"]]
 const getUser = cache(async (id) => {
   return await db.user.query(id);
-})
+});
 
 async function Profile({id}) {
   const user = await getUser(id);
@@ -327,7 +327,7 @@ In general, you should use [`useMemo`](/reference/react/useMemo) for caching a e
 'use client';
 
 function WeatherReport({record}) {
-  const avgTemp = useMemo(() => calculateAvg(record)), record);
+  const avgTemp = useMemo(() => calculateAvg(record), record);
   // ...
 }
 

src/content/reference/react/lazy.md

@@ -78,7 +78,7 @@ Now that your component's code loads on demand, you also need to specify what sh
 <Suspense fallback={<Loading />}>
   <h2>Preview</h2>
   <MarkdownPreview />
- </Suspense>
+</Suspense>
 ```
 
 In this example, the code for `MarkdownPreview` won't be loaded until you attempt to render it. If `MarkdownPreview` hasn't loaded yet, `Loading` will be shown in its place. Try ticking the checkbox: