docs(readme): HDD requirements (#262)

* docs(readme): HDD requirements

Update requirements for full and archive nodes

* docs(README): Wording

* docs(README): Bump up requirements

Author: wbnns

README.md

@@ -33,7 +33,7 @@ We recommend you have this hardware configuration to run a node:
 
 - a modern multi-core CPU with good single-core performance
 - at least 16 GB RAM (32 GB recommended)
-- a high performance SSD drive with at least 4 TB free (NVME recommended)
+- a high performance SSD drive with at least 750GB (full node) or 4.5TB (archive node) free
 
 ### Troubleshooting
 
@@ -45,7 +45,7 @@ If you encounter problems with your node, please open a [GitHub issue](https://g
 ### Supported networks
 
 | Ethereum Network | Status |
-|------------------| ------ |
+| ---------------- | ------ |
 | Sepolia testnet  | ✅     |
 | Mainnet          | ✅     |
 
@@ -68,7 +68,6 @@ curl -d '{"id":0,"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["late
 
 Note: Some L1 nodes (e.g. Erigon) do not support fetching storage proofs. You can work around this by specifying `--l1.trustrpc` when starting op-node (add it in `op-node-entrypoint` and rebuild the docker image with `docker compose build`.) Do not do this unless you fully trust the L1 node provider.
 
-
 #### Persisting Data
 
 By default, the data directory is stored in `${PROJECT_ROOT}/geth-data`. You can override this by modifying the value of
@@ -83,6 +82,7 @@ This is useful for running the node in a Kubernetes cluster, for example.
 
 Note that you'll need to override some of the default configuration that assumes a multi-container environment (`OP_NODE_L2_ENGINE_RPC`) and any port conflicts (`OP_NODE_RPC_PORT`).
 Example:
+
 ```
 docker run --env-file .env.sepolia -e OP_NODE_L2_ENGINE_RPC=ws://localhost:8551 -e OP_NODE_RPC_PORT=7545 ghcr.io/base-org/node:latest
 ```