example: Matched pin numbers in docs to numbers in variants files

[lbernstone]

Description of Change

Matched pin numbers in doco to numbers in variants files. This should make it easier to use the examples as is. Also added entries for the new variants. Changed SD examples to make REASSIGN_PINS more transparent. Fixes #9082

Tests scenarios

Tested on esp32-c3.

[github-actions]

Warnings

⚠️

Some issues found for the commit messages in this PR: the commit message "Changed SD examples to make REASSIGN_PINS more transparent. Fixes #9082": summary looks empty type/action looks empty the commit message "Matched pin numbers in doco to numbers in variants files": summary looks empty type/action looks empty the commit message "Non-breaking dashes": summary looks empty type/action looks empty Please fix these commit messages - here are some basic tips: follow Conventional Commits style correct format of commit message should be: <type/action>(<scope/component>): <summary>, for example fix(esp32): Fixed startup timeout issue allowed types are: change,ci,docs,feat,fix,refactor,remove,revert,test sufficiently descriptive message summary should be between 20 to 72 characters and start with upper case letter avoid Jira references in commit messages (unavailable/irrelevant for our customers) TIP: Install pre-commit hooks and run this check when committing (uses the Conventional Precommit Linter).

	Messages
📖	You might consider squashing your 4 commits (simplifying branch history).

👋 Hello lbernstone, we appreciate your contribution to this project!

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LGTM!