chore(SOLNENG-27): update docs

Author: MnrGreg

solana-staking/fireblocks/nodejs/README.md

@@ -20,7 +20,7 @@ sequenceDiagram
 
 ### Prerequisites
   - [Node.js](https://nodejs.org/en/download/package-manager) or use [code-spaces](https://codespaces.new/Blockdaemon/demo-buildervault-stakingAPI?quickstart=1)
-  - Register for a Fireblocks sandbox tenant: https://www.blockdaemon.com/get-started/builder-vault-sandbox-registration
+  - Create Fireblocks [API and Secret key](https://developers.fireblocks.com/docs/manage-api-keys) for use with the [Fireblocks TypeScript SDK](https://github.com/fireblocks/ts-sdk)
   - Register free Blockdaemon [RPC API key](https://docs.blockdaemon.com/reference/get-started-rpc#step-1-sign-up-for-an-api-key) and set in .env as BLOCKDAEMON_API_KEY
   - Register free Blockdaemon [Staking API key](https://docs.blockdaemon.com/reference/get-started-staking-api#step-1-sign-up-for-an-api-key) and set in .env as BLOCKDAEMON_STAKE_API_KEY
 
@@ -37,9 +37,9 @@ cp .env.example .env
 npm install
 ```
 
-### Step 3. Launch solana-stake-bv.ts to auto-create the Builder Vault wallet address on first run
+### Step 3. Launch solana-stake-fb.ts to auto-create the Builder Vault wallet address on first run
 ```shell
-npm run start solana-stake-bv.ts
+npm run start solana-stake-fb.ts
 ```
 - note, on first run this step will fail as the wallet address has no funds
 - copy the new Solana wallet address and fund the account
@@ -50,9 +50,9 @@ npm run start solana-stake-bv.ts
   - https://faucet.quicknode.com/solana/testnet
   - https://solfate.com/faucet
 
-### Step 5. Launch solana-stake-bv.ts to generate the Stake Intent request, sign the request with BuilderVault and broadcast the transaction
+### Step 5. Launch solana-stake-fb.ts to generate the Stake Intent request, sign the request with BuilderVault and broadcast the transaction
 ```shell
-npm run start solana-stake-bv.ts
+npm run start solana-stake-fb.ts
 ```
 - [optional] view the signed transaction contents with inspector: https://explorer.solana.com/tx/inspector?cluster=testnet
 - observe the confirmed transaction through the generated blockexplorer link