Remove outdated usage of "Consul Connect" instead of Consul service mesh.
The connect subsystem in Consul provides Consul's service mesh capabilities.
However, the term "Consul Connect" should not be used as an alternative to
the name "Consul service mesh".
Remove incorrect sidecar port range on docs for built-in proxy.
Updates the bind_port/port fields on the built-in proxy and sidecar
service registration pages to link to the `sidecar_min_port` and
`sidecar_max_port` configuration options for the defined port range.
Fixes#12253
* Use CodeTabs for examples in multiple formats.
* Ensure correct language on code fences.
* Use CodeBlockConfig for examples with filenames, or which need
highlighted content.
* website: migrate to new nav-data format
* website: clean up unused intro content
* website: remove deprecated sidebar_title from frontmatter
* website: add react-content to fix global style import issue