This was mostly done by clippy via `clippy::doc_markdown`.
I then reviewed it to fix words that shouldn't have it or where `--fix`
put the backtick in the wrong location.
This is to bring us into conformance with the [Rust crate ownership
policy](https://forge.rust-lang.org/policies/crate-ownership.html).
Items of note
- `cargo-credential-1password` is declared as Experimental as it is
intended for the community but I was unsure if we wanted to commit to
full support for it. In my mind, the ideal thing to do would be to
expatriate this to 1password.
- `home` is declared as Internal despite its wide use within the
ecosystem.
- `cargo-credential` is declared as Intentional as its an API intended
for the wider ecosystem and I didn't see a reason to declare it
experimental.
- `cargo-platform`, `cargo-util-schemas`, and `crates-io` are declared
as Intentional as they are both used internally and intended for
others to use for logic that integrates with cargo/registries.
I wondered about these being Experimental or Internal instead.
I removed it from `cargo-test-support` and `cargo-test-macro`, despite
people depending on those (via git) because my long term plan is resting
on the `auto` value which won't affect git dependencies.
This is a follow up to #12039.
This makes it easier for tools to report less irrelevant information.
I did both `publish = false` and `version = "0.0.0"` to help draw
attention to the fact that these crates are internal (inspired by a
matklad post).
I left `cargo-test-macro` and `cargo-test-support` in for my own
personal bias of one day wanting to see those crates published...
The only one removed that had previously been published was `mdman` but
seeing as that was a `0.0.0`, I'm assuming that was a mistake or just
reserving the name.
Before:
```console
$ cargo unpublished
name published current
==== ========= =======
cargo-platform 0.1.2 0.1.3
cargo-test-macro - 0.1.0
cargo-test-support - 0.1.0
cargo-util 0.2.3 0.2.4
crates-io 0.36.0 0.36.1
mdman 0.0.0 0.1.0
resolver-tests - 0.1.0
cargo 0.70.1 0.72.0
semver-check - 0.1.0
cargo-credential 0.1.0 0.2.0
cargo-credential-1password 0.1.0 0.2.0
cargo-credential-gnome-secret 0.1.0 0.2.0
cargo-credential-macos-keychain 0.1.0 0.2.0
cargo-credential-wincred 0.1.0 0.2.0
benchsuite - 0.1.0
```
After:
```console
name published current
==== ========= =======
cargo-platform 0.1.2 0.1.3
cargo-test-macro - 0.1.0
cargo-test-support - 0.1.0
cargo-util 0.2.3 0.2.4
crates-io 0.36.0 0.36.1
cargo 0.70.1 0.72.0
cargo-credential 0.1.0 0.2.0
cargo-credential-1password 0.1.0 0.2.0
cargo-credential-gnome-secret 0.1.0 0.2.0
cargo-credential-macos-keychain 0.1.0 0.2.0
cargo-credential-wincred 0.1.0 0.2.0
```
