E2E tests passed locally
**Added `readme.md` to the example code**
This explains how to build and run the example for both English and French.
**Archived `i18n-optional-manual-runtime-locale.md`**
I was asked to cut out a substantial swath of this page by reviewer "zip-fa". All that remained was a brief paragraph. I removed the page from the navigation after copying the remaining text to `i18n-optional-import-global-variants.md`. The page is still reachable by 3rd party links.
PR Close#51589
The purpose of the changes is to clean all markdown to match a single pedantic style.
* To ensure all changes in style are properly separated.
* To ensure all styled content aligns to nearest 4-character-tab.
* To ensure all code blocks use the Angular `<code-example>` or `<code-tab>` elements.
* To ensure all markdown exists outside of html tags.
* To ensure all images use the Angular style for `<img>` elements.
* To ensure that all smart punctuation is replaced or removed.
```text
’, ’, “, ”, –, —, …
```
* To ensure all content does not conflict with the following reserved characters.
```text
@, $, *, &, #, |, <, >,
```
* To ensure all content displays using html entities.
The following changes were made to files in the following directory.
```text
aio/content
```
The target files were markdown files.
The list of excluded files:
```text
.browserslistrc, .css, .conf, .editorconfig, .gitignore, .html, .js, .json, .sh, .svg, .ts, .txt, .xlf,
```
PR Close#45325
