Updated S3 Iceberg Integration (markdown)

S3-Iceberg-Integration.md

@@ -66,7 +66,6 @@ iceberg.rest-catalog.warehouse=s3tablescatalog/my-table-bucket
 # Enable SigV4 authentication for the REST catalog
 iceberg.rest-catalog.security=SIGV4
 iceberg.rest-catalog.signing-name=s3tables
-iceberg.rest-catalog.signing-region=us-east-1
 
 # S3 FileIO Configuration
 fs.native-s3.enabled=true
@@ -75,6 +74,7 @@ s3.path-style-access=true
 s3.signer-type=AwsS3V4Signer
 s3.aws-access-key=YOUR_ACCESS_KEY
 s3.aws-secret-key=YOUR_SECRET_KEY
+s3.region=us-east-1
 ```
 
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