[Docs] Fix: Typo in react/getting-started guide (#6470)

Signed-off-by: Reza Rahemtola <49811529+RezaRahemtola@users.noreply.github.com>
Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>

Author: RezaRahemtola

apps/portal/src/app/react/v5/getting-started/page.mdx

@@ -78,7 +78,7 @@ export const client = createThirdwebClient({
 });
 ```
 
-You only need to define the client once. Exporting the client vartiable will allow you to use anywhere in your app.
+You only need to define the client once. Exporting the client variable will allow you to use anywhere in your app.
 
 </Step>
 
@@ -254,4 +254,4 @@ export default function App() {
 
 ## Learn more
 
-You know have all the basics to build your own app with thirdweb. You can also check out the [full thirdweb SDK reference](/references/typescript/v5) to learn more about the different hooks and functions available.
+You now have all the basics to build your own app with thirdweb. You can also check out the [full thirdweb SDK reference](/references/typescript/v5) to learn more about the different hooks and functions available.