message: Some docs fixes
diff: # Onboarding plan
  -## Fast test
  -- Install (`docs/INSTALLATION.md`) and run testent (`npm start`)
  -- Start a test wallet by writing down 12 words
  -- Get test BTC, ETH (`docs / FAUCETS.md`)
  +## Dive as a user
  +- Install and run the service locally on testnet using [`/docs/INSTALLATION.md`](/docs/INSTALLATION.md)
  +- Open in browser, create a test wallet by writing down 12 words
  +- Get testnet BTC, ETH (see [`/docs/FAUCETS.md`](/docs/FAUCETS.md))
  - Send test coins to another wallet
  - Swap with yourself (you need another wallet using incognito mode)
  - Create an invoice and pay using another wallet (using incognito mode)
  ## Fast start
  -- Read the `docs`
  -- Explore Issue Tag List https://github.com/swaponline/MultiCurrencyWallet/labels
  -- Improve something: take a simple task / improve docs
  +- Improve something: take a simple task / improve docs / [List of tasks for newcomers](https://github.com/swaponline/MultiCurrencyWallet/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)
  - Create the first PR
  ## More info
  +- Read the [`docs`](/docs)
  +- Explore Issue Tag List https://github.com/swaponline/MultiCurrencyWallet/labels
  - Check out insights and current developers https://github.com/swaponline/MultiCurrencyWallet/pulse
  - Check out the modules listed in `package / json` (https://www.npmjs.com/)
  - Get acquainted with the structure and content of project files
  - Look into the current graph (https://github.com/swaponline/MultiCurrencyWallet/network)
  ## Deep insight
  -- Raise a bot locally and exchange with him
  -- Understand the swap algorithm
  +- Raise a bot locally and exchange with it using [`/docs/BOT.md`](/docs/BOT.md)
  +- Understand the swap algorithm (see [`/docs/CORE.md`](/docs/CORE.md))
  - Understand the core
  - Understand the bot
  - Explore the test server
  