docs: add brief docs about packageManager

README.md

@@ -268,6 +268,23 @@ The resulting output will look something like this:
 https://<your_pages_site>.pages.dev
 ```
 
+### Using a different package manager
+
+By default, this action will detect which package manager to use, based on the presence of a `package-lock.json`, `yarn.lock`, `pnpm-lock.yaml`, or `bun.lockb` file. 
+
+If you need to use a specific package manager for your application, you can set the `packageManager` input to `npm`, `yarn`, `pnpm`, or `bun`. You don't need to set this option unless you want to override the default behavior.
+
+
+```yaml
+jobs:
+  deploy:
+    steps:
+      uses: cloudflare/wrangler-action@v3
+      with:
+        apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+        packageManager: pnpm
+```
+
 ## Troubleshooting
 
 ### "I just started using Workers/Wrangler and I don't know what this is!"