Rename polkadot-parachain to polkadot-parachain-primitives (paritytech#1334)

* Rename `polkadot-parachain` to `polkadot-parachain-primitives`

While doing this it also fixes some last `rustdoc` issues and fixes
another Cargo warning related to `pallet-paged-list`.

* Fix compilation

* ".git/.scripts/commands/fmt/fmt.sh"

* Fix XCM docs

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Co-authored-by: command-bot <>

Author: bkchr

substrate/frame/paged-list/fuzzer/Cargo.toml

@@ -10,7 +10,7 @@ description = "Fuzz storage types of pallet-paged-list"
 publish = false
 
 [[bin]]
-name = "pallet-paged-list"
+name = "pallet-paged-list-fuzzer"
 path = "src/paged_list.rs"
 
 [dependencies]