Update client-generator/nextjs.md

Co-Authored-By: Kévin Dunglas <[email protected]>

Author: Gregcop1

client-generator/nextjs.md

@@ -16,7 +16,7 @@ $ npx create-next-app --example custom-server-express your-app-name
 $ yarn create next-app --example custom-server-express your-app-name
 ```
 
-### Enable Typescript
+### Enabling Typescript
 
 Install typescript dependencies