update README

README.md

@@ -51,7 +51,7 @@ contains 35 frames of 800x800 pixel images in 5 bandpasses starting with run 420
 You first need to install the `datasets` and `astropy` packages:
 
 ```bash
-pip install datasets satrapy
+pip install datasets astropy
 ```
 
 There are two datasets: `tiny` and `full`, each with `train` and `test` splits. The `tiny` dataset has 2 4D images in the `train` and 1 in the `test`. The `full` dataset contains all the images in the `data/` directory.
@@ -68,7 +68,7 @@ Then in your python script:
 
 ```python
 from datasets import load_dataset
-dataset = load_dataset('AstroCompress/GBI-16-4D', 'tiny')
+dataset = load_dataset("AstroCompress/GBI-16-4D", "tiny")
 ds = dataset.with_format("np")
 ```
 
@@ -84,7 +84,7 @@ Then `cd GBI-16-4D` and start python like:
 
 ```python
 from datasets import load_dataset
-dataset = load_dataset('./GBI-16-4D.py', 'tiny', data_dir="./data/")
+dataset = load_dataset("./GBI-16-4D.py", "tiny", data_dir="./data/")
 ds = dataset.with_format("np")
 ```