Wrong links on https://data.paradigm.xyz/about

[nmandal]

I believe I found two instances where the link goes to the wrong page on the about page.

Under These files are too big. How am I supposed to use them?

There are many options for processing large amounts of parquet data. In many cases, you don’t even need a database or a large amount of memory. See below for an overview of parquet, or see example dataset usage in [this notebook](https://github.com/paradigmxyz/paradigm-data-portal/blob/main/notebooks/ethereum_contracts.ipynb).

This link 404s (see below). I believe it should link to [this notebook](https://github.com/paradigmxyz/paradigm-data-portal/blob/main/notebooks/explore_ethereum_contracts.ipynb) instead.

Under About Parquet

You can run efficient queries against parquet files without any database and without needing to fit the files in memory. See [this notebook](https://parquet.apache.org/) for example usage.

I believe this should link to the same notebook as above: [this notebook](https://github.com/paradigmxyz/paradigm-data-portal/blob/main/notebooks/explore_ethereum_contracts.ipynb)