docs: remove unnecessary zip for all files on cache creation stage (#155

)

vulnz/README.md

@@ -92,8 +92,6 @@ Alternatively, without using the above install command:
 
 ```bash
 ./vulnz-6.0.1.jar cve --cache --directory ./cache
-cd cache
-for file in *.json; do gzip -k "${file}"; done 
 ```
 
 When creating the cache all other arguments to the vulnz cli