[fix lint warnings: Uniques pallet] fix clippy::doc_markdown warnings (#14592)

* Fix clippy::doc_markdown warnings

* Remove accidental commit of script

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_uniques

* Some more backticks

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_uniques

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Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: command-bot <>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>