docs: use lowercase in README title

Co-authored-by: Kristján Oddsson <koddsson@gmail.com>

README.md

@@ -1,4 +1,4 @@
-### @GitHub/jtml 
+### @github/jtml 
 
 This library is designed as a layer on top of [@github/template-parts](https://github.com/github/template-parts/) to provide declarative, JavaScript based HTML template tags.
 
@@ -7,4 +7,3 @@ This library is heavily inspired by [`lit-html`](https://github.com/Polymer/lit-
  - To re-use code we're using with [@github/template-parts](https://github.com/github/template-parts/) which is in production at GitHub.
  - To align closer to the `Template Parts` whatwg proposal. By using [@github/template-parts](https://github.com/github/template-parts/) we aim to closely align to the Template Parts proposal, hopefully one day dropping the dependency on [@github/template-parts](https://github.com/github/template-parts/).
 
-