fixup! Add a script to help users generate os_images and release_images

hack/README.md

@@ -1,7 +1,15 @@
 # generate_os_release_images.py
-Can be used to generate os_images and release_images.
+
+## Requriments
+
+```shell
+pip install -r ./pip-requirements.txt
+```
+
+## Useage
+Can be used to generate `os_images` and `release_images`.
 
 Here's an example for multiple different ocp versions:
-```bash
+```shell
 ./generate_os_release_images.py -a x86_64 -v 4.12.29 -v 4.11.30 -v 4.13.2 -v 4.14.12 -v 4.15.1
 ```