fix(docs): update README.md with correct Biosets link

Updated the README.md file to replace the incorrect biofit link with the
correct link to the Biosets repository. Also updated the import statement
to reflect the correct module name.

README.md

@@ -98,11 +98,11 @@ print(preprocessor)
 preprocessed_data = preprocessor.fit_transform(dataset)
 ```
 
-Biofit is made with biofit in mind. You can pass the loaded dataset instead of a string
-to load the preprocessors:
+Biofit is made with [Biosets](https://github.com/psmyth94/biosets) in mind. You can
+pass the loaded dataset instead of a string to load the preprocessors:
 
 ```python
-from biofit import load_dataset
+from biosets import load_dataset
 
 dataset = load_dataset("csv", data_files="my_file.csv", experiment_type="snp")