fix (docs): fix typo

content/docs/03-ai-sdk-core/10-generating-structured-data.mdx

@@ -94,7 +94,7 @@ console.log('users', users);
 
 ### Dates
 
-Zod expectes JavaScript Date objects, but most models return dates as strings. You can use the `z.string().datetime()` method to specify and validate datetime strings.
+Zod expects JavaScript Date objects, but most models return dates as strings. You can use the `z.string().datetime()` method to specify and validate datetime strings.
 
 ```ts highlight="6-9"
 const result = await generateObject({