⬆️update: updated the Readme.md to have the example of running the he…

…llo_world using the `blitzer` feature

crates/proof-of-sql/examples/hello_world/README.md

@@ -15,6 +15,12 @@ This example demonstrates generating and verifying a proof of the query `SELECT
 cargo run --example hello_world --features="test"
 ```
 
+> [!NOTE]
+> To run this example with the `blitzar` feature:
+> ```bash
+> cargo run --example hello_world --features="blitzar test"
+> ```
+
 #### Output
 
 ```