docs: provider link fixed (nextauthjs#4913)

CONTRIBUTING.md

@@ -75,7 +75,7 @@ When running `pnpm dev`, you start a Next.js developer server on `http://localho
 
 If you think your custom provider might be useful to others, we encourage you to open a PR and add it to the built-in list so others can discover it much more easily! You only need to add two changes:
 
-1. Add your config: [`src/providers/{provider}.js`](https://github.com/nextauthjs/next-auth/tree/main/src/providers) (Make sure you use a named default export, like `export default function YourProvider`!)
+1. Add your config: [`src/providers/{provider}.js`](https://github.com/nextauthjs/next-auth/tree/main/packages/next-auth/src/providers) (Make sure you use a named default export, like `export default function YourProvider`!)
 2. Add provider documentation: [`www/docs/providers/{provider}.md`](https://github.com/nextauthjs/next-auth/tree/main/www/docs/providers)
 
 That's it! 🎉 Others will be able to discover this provider much more easily now!

docs/docs/configuration/providers/oauth.md

@@ -350,7 +350,7 @@ providers: [
 
 ## Built-in providers
 
-NextAuth.js comes with a set of built-in providers. You can find them [here](https://github.com/nextauthjs/next-auth/tree/main/src/providers). Each built-in provider has its own documentation page:
+NextAuth.js comes with a set of built-in providers. You can find them [here](https://github.com/nextauthjs/next-auth/tree/main/packages/next-auth/src/providers). Each built-in provider has its own documentation page:
 
 <div className="provider-name-list">
 {Object.entries(require("../../../providers.json"))

docs/versioned_docs/version-v3/configuration/providers.md

@@ -181,7 +181,7 @@ If you think your custom provider might be useful to others, we encourage you to
 
 You only need to add two changes:
 
-1. Add your config: [`src/providers/{provider}.js`](https://github.com/nextauthjs/next-auth/tree/main/src/providers)<br />
+1. Add your config: [`src/providers/{provider}.js`](https://github.com/nextauthjs/next-auth/tree/main/packages/next-auth/src/providers)<br />
    • make sure you use a named default export, like this: `export default function YourProvider`
 2. Add provider documentation: [`www/docs/providers/{provider}.md`](https://github.com/nextauthjs/next-auth/tree/ead715219a5d7a6e882a6ba27fa56b03954d062d/www/docs/providers)
 3. Add it to our [provider types](https://github.com/nextauthjs/next-auth/blob/ead715219a5d7a6e882a6ba27fa56b03954d062d/types/providers.d.ts) (for TS projects)<br />