chore: fix typos (#6723)

`an text area` -> `a text area`
`an discussion` -> `a discussion`

Author: ahmoin

src/content/learn/editor-setup.md

@@ -40,7 +40,7 @@ Code linters find problems in your code as you write, helping you fix them early
 
 ### Formatting {/*formatting*/}
 
-The last thing you want to do when sharing your code with another contributor is get into an discussion about [tabs vs spaces](https://www.google.com/search?q=tabs+vs+spaces)! Fortunately, [Prettier](https://prettier.io/) will clean up your code by reformatting it to conform to preset, configurable rules. Run Prettier, and all your tabs will be converted to spaces—and your indentation, quotes, etc will also all be changed to conform to the configuration. In the ideal setup, Prettier will run when you save your file, quickly making these edits for you.
+The last thing you want to do when sharing your code with another contributor is get into a discussion about [tabs vs spaces](https://www.google.com/search?q=tabs+vs+spaces)! Fortunately, [Prettier](https://prettier.io/) will clean up your code by reformatting it to conform to preset, configurable rules. Run Prettier, and all your tabs will be converted to spaces—and your indentation, quotes, etc will also all be changed to conform to the configuration. In the ideal setup, Prettier will run when you save your file, quickly making these edits for you.
 
 You can install the [Prettier extension in VSCode](https://marketplace.visualstudio.com/items?itemName=esbenp.prettier-vscode) by following these steps:
 

src/content/reference/react-dom/components/textarea.md

@@ -330,7 +330,7 @@ textarea { display: block; margin-top: 5px; margin-bottom: 10px; }
 
 <Pitfall>
 
-**If you pass `value` without `onChange`, it will be impossible to type into the text area.** When you control an text area by passing some `value` to it, you *force* it to always have the value you passed. So if you pass a state variable as a `value` but forget to update that state variable synchronously during the `onChange` event handler, React will revert the text area after every keystroke back to the `value` that you specified.
+**If you pass `value` without `onChange`, it will be impossible to type into the text area.** When you control a text area by passing some `value` to it, you *force* it to always have the value you passed. So if you pass a state variable as a `value` but forget to update that state variable synchronously during the `onChange` event handler, React will revert the text area after every keystroke back to the `value` that you specified.
 
 </Pitfall>