Update README.md

Author: jessiemongeon1

rust/threshold-ecdsa/README.md

@@ -15,15 +15,17 @@ This tutorial gives a complete overview of the development, starting with downlo
 > [!TIP]
 > This walkthrough focuses on the version of the sample canister code written in the Rust programming language. There is also a [Motoko](https://internetcomputer.org/docs/current/developer-docs/backend/motoko/index.md) version available in the same repo and follows the same commands for deploying.
 
-## Prerequisites
+## Local deployment
+
+### Prerequisites
 This example requires an installation of:
 
 - [x] Install the [IC SDK](https://internetcomputer.org/docs/current/developer-docs/getting-started/install) v0.11.0 or newer.
 - [x] Clone the example dapp project: `git clone https://github.com/dfinity/examples`
 
 Begin by opening a terminal window.
 
-## Step 1: Setup the project environment
+### Step 1: Setup the project environment
 
 Navigate into the folder containing the project's files and start a local instance of the Internet Computer with the commands:
 
@@ -32,7 +34,7 @@ cd examples/rust/threshold-ecdsa
 dfx start --background
 ```
 
-## Step 2: Deploy the canisters
+### Step 2: Deploy the canisters
 
 ```bash
 dfx deploy
@@ -147,4 +149,4 @@ In this walkthrough, we deployed a sample smart contract that:
 
 * Signed with private ECDSA keys even though **canisters do not hold ECDSA keys themselves**.
 * Requested a public key.
-* Performed signature verification.
+* Performed signature verification.