Fix typo in ts.mdx (#1030)

Author: maangs

src/content/ts.mdx

@@ -393,7 +393,7 @@ export type Field = {
 
 ## \</> FieldPath {#FieldPath}
 
-This type is useful when you define custom component's `name` prop, and it will type check again your field path.
+This type is useful when you define custom component's `name` prop, and it will type check against your field path.
 
 ```typescript copy
 export type FieldPath<TFieldValues extends FieldValues> = Path<TFieldValues>