Fix based on Sohey's comments

Author: hughescoin

docs/mini-apps/features/sign-manifest.mdx

@@ -14,7 +14,6 @@ Every Mini App needs a **manifest** (`farcaster.json`) file to be recognized by
 Your manifest file must be publicly accessible at:  
 `https://your-domain.com/.well-known/farcaster.json`
 
-For NextJS apps, this is done by creating a file in the following directory: `app/.well-known/farcaster.json/route.ts`
 
 <Tip> Want to learn more about manifests? 👉 Check out our [Manifest guide](/mini-apps/features/manifest).</Tip>
 
@@ -30,7 +29,7 @@ There are two supported ways to sign and generate your manifest:
 
     1. Visit **[Base.dev](https://base.dev)** and sign in with your Base account.  
     2. Open **Preview → Account Association**.  
-    3. Enter your Mini App domain (exclude `https://` and trailing slashes) in the App URL field.  
+    3. Enter your Mini App domain in the App URL field.  
     4. Click **Submit**. You should see a notification that you should verify your app ownership. Click **Verify → Sign**.  
     5. Follow the on-screen instructions to sign the message in your wallet.  
     6. Click **Copy** to copy the generated `accountAssociation` object.