Update index.md

Author: mrbuche

docs/src/index.md

@@ -2,7 +2,7 @@
 
 [![docs (stable)](https://raw.githubusercontent.com/sandialabs/Polymers/main/pages/assets/images/julia-docs-stable.svg)](https://sandialabs.github.io/Polymers/julia/docs/stable)
 [![docs (latest)](https://raw.githubusercontent.com/sandialabs/Polymers/main/pages/assets/images/julia-docs-latest.svg)](https://sandialabs.github.io/Polymers/julia/docs/latest)
-![Pkg](https://img.shields.io/github/v/release/sandialabs/Polymers?color=cb3c33&label=Pkg&logo=Julia&logoColor=cb3c33)](#)
+[![Pkg](https://img.shields.io/github/v/release/sandialabs/Polymers?color=cb3c33&label=Pkg&logo=Julia&logoColor=cb3c33)](#)
 
 This is the documentation for Julia API, which calls the Rust library.