fix: update messed links

Co-authored-by: Nico Flaig <nflaig@protonmail.com>

README.md

@@ -16,7 +16,7 @@
 
 - :gear: Follow the installation method for [source install](https://chainsafe.github.io/lodestar/getting-started/installation/#build-from-source), [NPM install](https://chainsafe.github.io/lodestar/getting-started/installation/#install-from-npm-not-recommended), or [Docker install](https://chainsafe.github.io/lodestar/getting-started/installation/#docker-installation) to install Lodestar. Or use our [Lodestar Quickstart scripts](https://github.com/ChainSafe/lodestar-quickstart).
 - :books: Use [Lodestar libraries](https://chainsafe.github.io/lodestar/supporting-libraries/libraries/) in your next Ethereum Typescript project.
-- :globe_with_meridians: Run a beacon node on [mainnet or a public testnet](https://chainsafe.github.io/lodestar/beacon-management/beacon-cli/).
+- :globe_with_meridians: Run a beacon node on [mainnet or a public testnet](https://chainsafe.github.io/lodestar/getting-started/starting-a-node/).
 - :computer: Utilize the whole stack by [starting a local testnet](https://chainsafe.github.io/lodestar/advanced-topics/setting-up-a-testnet/).
 - :spiral_notepad: View the Lodestar [CLI commands and options](https://chainsafe.github.io/lodestar/reference/cli/).
 - :nerd_face: View the [Package and dependency structure](https://chainsafe.github.io/lodestar/contribution/depgraph/).