fix: Reth binaries URL

[shekhirin]

Old instructions mistakenly matched reproducible Reth binary:

$ RELEASE_URL="https://api.github.com/repos/paradigmxyz/reth/releases/latest"
BINARIES_URL="$(curl -s $RELEASE_URL | jq -r '.assets[] | select(.name | startswith ("reth")) | .browser_download_url' | grep x86_64-unknown-linux-gnu.tar.gz$)"

$ echo $BINARIES_URL
https://github.com/paradigmxyz/reth/releases/download/v1.11.0/reth-reproducible-v1.11.0-x86_64-unknown-linux-gnu.tar.gz https://github.com/paradigmxyz/reth/releases/download/v1.11.0/reth-v1.11.0-x86_64-unknown-linux-gnu.tar.gz