update lux example readme

Author: tsmathis

mpcontribs-lux/examples/README.md

@@ -17,16 +17,19 @@ If you are less comfortable with python, or have non-columnar data, then you sho
 
 You will need an account with the Materials Project.
 Once you've signed in, copy your API key from your [dashboard](https://next-gen.materialsproject.org/api) and either
+
 1. Run from a terminal:
-    ```
-    echo 'export MP_API_KEY=<your api key>' >> ~/.bashrc
-    echo 'export MPCONTRIBS_API_KEY=$MP_API_KEY' >> ~/.bashrc
+   ```
+   echo 'export MP_API_KEY=<your api key>' >> ~/.bashrc
+   echo 'export MPCONTRIBS_API_KEY=$MP_API_KEY' >> ~/.bashrc
+   ```
+
 ```
 and replace `<your api key>`, and ~/.bashrc with ~/.zshrc, etc. as appropriate.
 
 2. Use it explicitly in the API client code
 3. Use an alternate environment variable solution like `.env` files.
 
 For a python environment, you will need the packages in `requirements.txt`.
-If you need to upload <b>large (>15 MB/document limit of MongoDB) or raw data</b>, this guide will instruct you how to upload those data objects to the Materials Project's AWS OpenData bucket, <b><i>pending permission/IAM credentials from Materials Project staff</i></b>.
 If you are uploading large data, we strongly recomment using the `pyarrow` package to write parquet files for data that is amenable to more columnar formats, and `zarr` for hierarchical/HDF5-like/netCDF-like or tensorial data.
+```