Use relative-to-root link for LICENSE file in README so that it can resolve in Github even when you view the README from the pgen crate dir.

Author: ctsrc

crates/pgen/README.md

@@ -2,7 +2,7 @@
 
 [![Crates.io](https://img.shields.io/crates/v/pgen?style=flat-square)](https://crates.io/crates/pgen)
 [![Crates.io](https://img.shields.io/crates/d/pgen?style=flat-square)](https://crates.io/crates/pgen)
-[![License](https://img.shields.io/badge/license-ISC-blue?style=flat-square)](LICENSE)
+[![License](https://img.shields.io/badge/license-ISC-blue?style=flat-square)](/LICENSE)
 [![GitHub stars](https://img.shields.io/github/stars/ctsrc/Pgen?style=social)](https://github.com/ctsrc/Pgen#start-of-content)
 
 Generate passphrases using any of the following wordlists: