Source code highlighting: superfluous empty line after preformatted text
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Versions
- OS: Debian 12 (testing)
- Gajim version: 1.4.0~dev1+20220225.c0f5c2f3-1
- GTK version: 3.24.31-1
- Python-nbxmpp version: 3.0.0~dev1+20220201.ddfe6217-1
Steps to reproduce the problem
Write the following text
```
line 1
```
more text below (without it, the bug is *not* triggered)
Expected behavior
The text line 1
should be displayed preformatted
Actual behavior
There is an empty line after line 1