docs: remove warning about packageManager and pnpm default

README.md

@@ -31,7 +31,6 @@ jobs:
       - name: Deploy
         uses: cloudflare/wrangler-action@v3
         with:
-          packageManager: pnpm # you can omit this if you use npm
           apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
 ```
 
@@ -53,10 +52,6 @@ jobs:
 
 ## Configuration
 
-### packageManager
-
-⚠️ you must specify package manager. If not specified GH action assumes you are using npm and other managers might be failing. For example pnpm will fail with: `Cannot read properties of null (reading 'matches')`
-
 If you need to install a specific version of Wrangler to use for deployment, you can also pass the input `wranglerVersion` to install a specific version of Wrangler from NPM. This should be a [SemVer](https://semver.org/)-style version number, such as `2.20.0`:
 
 ```yaml
@@ -273,6 +268,22 @@ 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!"