Font size of blue texts in tutorials are too big(Chinese version).
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#### Summary:
<!-- Summarize the issue/suggestion concisely: -->
The size of blue texts(menu texts) are too big.
#### Steps to reproduce:
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- `git clone https://gitlab.com/inkscape/inkscape-docs/documentation.git
- cd documentation/tutorials/basic
- replace zh_CN.po with my translated po file
- run command 'make all'
- open file 'tutorial-basic.zh_CN.html' in basic folder
- the size of blue texts(menu texts) are too big
- `
#### What happened?
The size of blue texts(menu texts) are too big.

#### What should have happened?
The size of blue texts(menu texts) are same as black texts.
Sample attachments:
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#### Version info
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[zh_CN.po.for_Basic_Tutorial](/uploads/36300e06c0af1ab3f47c509f59294e01/zh_CN.po.for_Basic_Tutorial) Paste the information in the empty space between the apostrophes below:
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- The po file needs to be rename to zh_CN.po .
```
Inkscape 1.1.1 (3bf5ae0d25, 2021-09-20)
GLib version: 2.66.8
GTK version: 3.24.24
glibmm version: 2.64.2
gtkmm version: 3.24.2
libxml2 version: 2.9.10
libxslt version: 1.1.34
Cairo version: 1.16.0
Pango version: 1.46.2
HarfBuzz version: 2.7.4
Poppler version: 20.09.0
OS version: Debian GNU/Linux 11 (bullseye)
```
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issue