docs(provider): fix typo (#2369)

Author: ild0tt0re

www/docs/configuration/providers.md

@@ -187,7 +187,7 @@ You only need to add two changes:
 2. Add provider documentation: [`www/docs/providers/{provider}.md`](https://github.com/nextauthjs/next-auth/tree/main/www/docs/providers)
 3. Add it to our [provider types](https://github.com/nextauthjs/next-auth/blob/main/types/providers.d.ts) (for TS projects)<br />
    • you just need to add your new provider name to [this list](https://github.com/nextauthjs/next-auth/blob/main/types/providers.d.ts#L56-L97)<br />
-   • in case you new provider accepts some custom options, you can [add them here](https://github.com/nextauthjs/next-auth/blob/main/types/providers.d.ts#L48-L53)
+   • in case your new provider accepts some custom options, you can [add them here](https://github.com/nextauthjs/next-auth/blob/main/types/providers.d.ts#L48-L53)
 
 That's it! 🎉 Others will be able to discover this provider much more easily now!