fix(repo): added mention of pos-dashboard package (#14546)

Co-authored-by: dave | d1onys1us <13951458+d1onys1us@users.noreply.github.com>

README.md

@@ -42,6 +42,7 @@ taiko-mono/
 │   ├── <a href="./packages/bridge-ui-v2">bridge-ui-v2</a>: Taiko bridge frontend UI v2 (🚧 under construction 🚧).
 │   ├── <a href="./packages/eventindexer">eventindexer</a>: Event indexer.
 │   ├── <a href="./packages/fork-diff">fork-diff</a>: Fork diff page (currently, for geth).
+│   ├── <a href="./packages/pos-dashboard">pos-dashboard</a>: TTKOe staking dashboard.
 │   ├── <a href="./packages/protocol">protocol</a>: Taiko protocol and bridge smart contracts.
 │   ├── <a href="./packages/relayer">relayer</a>: Bridge backend relayer in Go.
 │   ├── <a href="./packages/starter-dapp">starter-dapp</a>: Template for Taiko dapps.