Update rust readmes

Author: jessiemongeon1

rust/basic_bitcoin/README.md

@@ -1,4 +1,4 @@
-# Basic Bitcoin 
+# Basic Bitcoin
 
 This tutorial will walk you through how to deploy a sample [canister smart contract](https://internetcomputer.org/docs/current/developer-docs/multi-chain/bitcoin/overview) **that can send and receive Bitcoin** on the Internet Computer.
 
@@ -14,7 +14,7 @@ of the Internet Computer.
 
 For a deeper understanding of the ICP < > BTC integration, see the [Bitcoin integration documentation](https://wiki.internetcomputer.org/wiki/Bitcoin_Integration).
 
-### Prerequisites
+## Prerequisites
 
 * [x] Install the [IC
   SDK](https://internetcomputer.org/docs/current/developer-docs/getting-started/install).
@@ -111,7 +111,7 @@ from three types of addresses:
    key. This precaution is to prevent attacks that can occur when creating
    taproot multisigner addresses using specific multisignature schemes. However,
    the Schnorr API of the internet computer does not support Schnorr
-   multisignatures. 
+   multisignatures.
 3. A [P2TR
    address](https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki)
    where the funds can be spent using the provided public key with the script
@@ -209,7 +209,7 @@ reflected in your current balance.
 
 ## Step 6: Retrieving block headers
 
-You can also get a range of Bitcoin block headers by using the `get_block_headers` 
+You can also get a range of Bitcoin block headers by using the `get_block_headers`
 endpoint on your canister.
 
 In the Candid UI, write the desired start height and optionally end height, and click on "Call":
@@ -233,7 +233,7 @@ In this tutorial, you were able to:
 * Connect the canister to the Bitcoin testnet.
 * Send the canister some testnet BTC.
 * Check the testnet BTC balance of the canister.
-* Use the canister to send testnet BTC to another testnet BTC address. 
+* Use the canister to send testnet BTC to another testnet BTC address.
 
 This example is extensively documented in the following tutorials:
 

rust/basic_dao/README.md

@@ -10,7 +10,7 @@ Certain system parameters, like the number of `Yes` votes needed to pass a propo
 
 View the [canister service definition](https://github.com/dfinity/examples/blob/master/rust/basic_dao/src/basic_dao/src/basic_dao.did) for more details.
 
-### Prerequisites
+## Prerequisites
 This example requires an installation of:
 
 - [x] The Rust toolchain (e.g. cargo).

rust/basic_ethereum/README.md

@@ -14,7 +14,7 @@ features of the Internet Computer.
 For a deeper understanding of the ICP < > ETH integration, see
 the [Ethereum integration overview](https://internetcomputer.org/docs/current/developer-docs/multi-chain/ethereum/overview).
 
-### Prerequisites
+## Prerequisites
 
 - [x] Install the [IC SDK](https://internetcomputer.org/docs/current/developer-docs/getting-started/install).
 

rust/canister-snapshots/README.md

@@ -6,7 +6,7 @@ The `remove_spam` canister method intentionally includes a bug to simulate data
 The example outlines the steps to install the canister, create a snapshot,
 and subsequently restore the data after the simulated data loss.
 
-### Prerequisites
+## Prerequisites
 
 This example requires an installation of:
 

rust/canister_logs/README.md

@@ -1,6 +1,6 @@
 # Canister logs
 
-### Prerequisites
+## Prerequisites
 
 - [x] Install the [IC
   SDK](https://internetcomputer.org/docs/current/developer-docs/getting-started/install). For local testing, `dfx >= 0.22.0` is required.

rust/composite_query/README.md

@@ -1,6 +1,6 @@
 # Composite queries
 
-### Prerequisites
+## Prerequisites
 This example requires an installation of:
 
 - [x] Install the [IC SDK](https://internetcomputer.org/docs/current/developer-docs/setup/install/index.mdx).

rust/counter/README.md

@@ -2,7 +2,7 @@
 
 This example demonstrates a counter application.
 
-### Prerequisites
+## Prerequisites
 This example requires an installation of:
 
 - [x] Install the [IC SDK](https://internetcomputer.org/docs/current/developer-docs/setup/install/).

rust/dip721-nft-container/README.md

@@ -86,7 +86,7 @@ A running instance of the Rust canister for demonstration purposes is available
 The interface is meant to be programmatic, but the Rust version additionally contains HTTP functionality so you can view a metadata file at `<canister URL>/<NFT ID>/<file ID>`.
 It contains six NFTs, so you can look at items from `<canister URL>/0/0` to `<canister URL>/5/0`.
 
-### Prerequisites
+## Prerequisites
 
 - [x] Install the [IC SDK](https://internetcomputer.org/docs/current/developer-docs/getting-started/install).
 - [x] Clone the example dapp project: `git clone https://github.com/dfinity/examples`

rust/face-recognition/README.md

@@ -49,7 +49,7 @@ torch.onnx.export(resnet, input, "face-recognition.onnx", verbose=False, opset_v
 
 - #### Step 4: This should produce `face-recognition.onnx`. Copy the file to the root of this repository.
 
-### Prerequisites
+## Prerequisites
 
 - [x] Install the [IC
   SDK](https://internetcomputer.org/docs/current/developer-docs/getting-started/install). For local testing, `dfx >= 0.22.0` is required.

rust/hello/README.md

@@ -36,7 +36,7 @@ This example is based on the default project created by running `dfx new hello`.
 
 This example is based on the default project created by running `dfx new --type=rust hello`.
 
-### Prerequisites
+## Prerequisites
 
 This example requires an installation of:
 - [x] Install the [IC SDK](https://internetcomputer.org/docs/current/developer-docs/setup/install/index.mdx).