fix mkdocs warnings

[CunliangGeng]

This PR contains several minor miscellaneous changes.

The mkdocs warnings are:

WARNING -  mkdocs_autorefs: Multiple primary URLs found for 'gnps-data': ['quickstart/#gnps-data', 'concepts/gnps_data/#gnps-data']. Make sure to use unique headings, identifiers, or Markdown anchors (see our
           docs).
WARNING -  mkdocs_autorefs: concepts/bigscape.md: Could not find cross-reference target 'default-configurations'

[CunliangGeng]

• fix mkdocs warnings #304 👈 (View in Graphite)
• dev

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[CunliangGeng]

Merge activity

• Jan 24, 9:59 AM EST: A user started a stack merge that includes this pull request via Graphite.
• Jan 24, 10:00 AM EST: A user merged this pull request with Graphite.