Update "book/user/dev-tools.md"

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duguorong 2023-04-03 23:06:48 +08:00
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@ -18,7 +18,7 @@ representations of circuits.
On Debian systems, you will need the following additional packages:
```plaintext
sudo apt install cmake libexpat1-dev libfreetype6-dev
sudo apt install cmake libexpat1-dev libfreetype6-dev libcairo2-dev
```
### Circuit layout