Fix grammatical errors in updating data documentation (#85067)

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Co-authored-by: JJ Kasper <[email protected]>

Author: InfiniteCodeMonkeys

docs/01-app/01-getting-started/08-updating-data.mdx

@@ -14,7 +14,7 @@ You can update data in Next.js using React's [Server Functions](https://react.de
 
 ## What are Server Functions?
 
-A **Server Function** is an asynchronous function that runs on the server. They can be called from client through a network request, which is why they must be asynchronous.
+A **Server Function** is an asynchronous function that runs on the server. They can be called from the client through a network request, which is why they must be asynchronous.
 
 In an `action` or mutation context, they are also called **Server Actions**.
 
@@ -176,7 +176,7 @@ There are two main ways you can invoke a Server Function:
 
 ### Forms
 
-React extends the HTML [`<form>`](https://react.dev/reference/react-dom/components/form) element to allow Server Function to be invoked with the HTML `action` prop.
+React extends the HTML [`<form>`](https://react.dev/reference/react-dom/components/form) element to allow a Server Function to be invoked with the HTML `action` prop.
 
 When invoked in a form, the function automatically receives the [`FormData`](https://developer.mozilla.org/docs/Web/API/FormData/FormData) object. You can extract the data using the native [`FormData` methods](https://developer.mozilla.org/en-US/docs/Web/API/FormData#instance_methods):