docs: update to new npm install command

- refer to release link

README.md

@@ -24,9 +24,9 @@ Step by step installation:
 Setting up the bot requires basic knowledge of the command line, which is bash or similar on Linux/Mac, and cmd.exe in Windows
 
  1. Install [nodejs](https://nodejs.org). TediCross requires at least node version 16
- 2. Clone this git repo, or download it as a zip or whatever
+ 2. Clone this git repo, or download the latest [release](https://github.com/TediCross/TediCross/releases/latest)
  3. Open a terminal and enter the repo with the [`cd`](https://en.wikipedia.org/wiki/Cd_(command)) command. Something like `cd Downloads/TediCross-master`. Your exact command may differ
- 4. Run the command `npm install --production`
+ 4. Run the command `npm install --omit=dev`
  5. Make a copy of the file `example.settings.yaml` and name it `settings.yaml`
  6. Acquire a bot token for Telegram ([How to create a Telegram bot](https://core.telegram.org/bots#3-how-do-i-create-a-bot)) and put it in the settings file
    - The Telegram bot must be able to access all messages. Talk to [@BotFather](https://t.me/BotFather) to disable privacy mode for the bot