[DOC] Fix rendering of explanatory text

[ymzayek]

• Part of [DOC] Update and improve examples in nilearn documentation #3728

[github-actions]

👋 @ymzayek Thanks for creating a PR!

Until this PR is ready for review, you can include the [WIP] tag in its title, or leave it as a github draft.

Please make sure it is compliant with our contributing guidelines. In particular, be sure it checks the boxes listed below.

• PR has an interpretable title.
• PR links to Github issue with mention Closes #XXXX (see our documentation on PR structure)
• Code is PEP8-compliant (see our documentation on coding style)
• Changelog or what's new entry in doc/changes/latest.rst (see our documentation on PR structure)

For new features:

• There is at least one unit test per new function / class (see our documentation on testing)
• The new feature is demoed in at least one relevant example.

For bug fixes:

• There is at least one test that would fail under the original bug conditions.

We will review it as quick as possible, feel free to ping us with questions if needed.

[codecov]

Codecov Report

Merging #3972 (1916242) into main (93c49f1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3972   +/-   ##
=======================================
  Coverage   91.79%   91.79%           
=======================================
  Files         134      134           
  Lines       15772    15772           
  Branches     3284     3284           
=======================================
  Hits        14478    14478           
  Misses        751      751           
  Partials      543      543           

Flag	Coverage Δ
macos-latest_3.10	91.70% <ø> (ø)
macos-latest_3.11	91.70% <ø> (ø)
macos-latest_3.8	91.67% <ø> (ø)
macos-latest_3.9	91.67% <ø> (ø)
ubuntu-latest_3.10	91.70% <ø> (ø)
ubuntu-latest_3.11	91.70% <ø> (ø)
ubuntu-latest_3.8	91.67% <ø> (ø)
ubuntu-latest_3.9	91.67% <ø> (ø)
windows-latest_3.10	91.64% <ø> (ø)
windows-latest_3.11	91.64% <ø> (ø)
windows-latest_3.8	91.61% <ø> (ø)
windows-latest_3.9	91.61% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[bthirion]

LGTM, but the documentation was not generated ?
Is there any other example that needs that ?

[ymzayek]

LGTM, but the documentation was not generated ?

Hm yes I'm not sure why but sometimes circleci times out or gets cancelled probably because of too many requests and resource limitations

Is there any other example that needs that ?

No this is mainly dealing with changing this:

To:

[Remi-Gau]

good with me