test_importer has an invalid pattern match; insert two missing spaces.

[egberts]

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Issue

In test_code_in_list() of tests/test_importer.py, the following line mismatched the file:

            sample_line = re.search(r"-   This is a code sample", md).group(0)

and its/tmp/tmpjg53eho1/code-in-list-test.md file derived from pelican/tests/content/wordpressexport.xml content:

...
<ul>
    <li>List Item One!</li>
    <li>List Item Two!</li>
<li>This is a code sample
<pre>
...

Better to replace a single space with /s+ regex pattern.

Platform

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Platform

• OS version and name: Linux 6.1.0-21-amd64 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64 GNU/Linux
• Python version: 3.11.2
• Pelican version: HEAD (513abbf)
• Link to theme: m.css
• Links to plugins: pelican-plugins
• Link to your site: n/a
• Link to your source: n/a