resolve nested code fence line numbering

[johndutchover]

Summary of changes

index.md

Correct line numbering by adding by adding one backquote (min four) to code fences and indent code fences with three spaces

1. Resolve rendering of pydantic/pydantic/docs/concepts/pydantic_settings.md:

2. Intent nested code fences using three spaces

   Fixes list items numbering: fenced code blocks, within item lists:
   

3. Remove [renumbered] duplicate line:

4. Remove newlines between code blocks and numbered list items to fix markdown number sequences.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e529615) 97.45% compared to head (4368c45) 97.45%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #182   +/-   ##
=======================================
  Coverage   97.45%   97.45%           
=======================================
  Files           5        5           
  Lines         314      314           
  Branches       69       69           
=======================================
  Hits          306      306           
  Misses          6        6           
  Partials        2        2           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[johndutchover]

For context, see pydantic/pydantic#7950

[hramezani]

Thanks @johndutchover for this patch.

As I mentioned in the comments I don't see any change in the rendered docs.

You can also build pydantic-seetings docs locally. you need to:

1. Clone and install pydantic project https://docs.pydantic.dev/latest/contributing/
2. Change pydantic-settings doc link in pydantic_settings.md to use your branch. you can replace
   {{ external_markdown('https://raw.githubusercontent.com/pydantic/pydantic-settings/main/docs/index.md', '') }}
   with
   {{ external_markdown('https://raw.githubusercontent.com/johndutchover/pydantic-settings/pydantic-settings-docs/docs/index.md', '') }}

which is your branch.
3. Run make docs and see the rendered docs

[johndutchover]

@hramezani Turns out that "extra" newlines between code blocks and the numbered list items was preventing desired numbering sequence (1. .... 2. ...) when building docs. LGTM now!

[hramezani]

Thanks @johndutchover