fix readme doc
@ -103,7 +103,7 @@ Some things that the language is already capable of:
```
~> put $env:HOME
▶ /home/xiaq
~> $env:PATH = $env:PATH":/bin"
~> env:PATH=$env:PATH":/bin"
The language is not yet complete. Notably, control structures like `if` and
The note is not visible to the blocked user.