Add missing newline in README.md

Inserted a missing newline after the npm run dev command in the README.md file. This improves readability and consistency in the code block formatting.

Signed-off-by: Justin <328965+justinbarry@users.noreply.github.com>

README.md

@@ -12,6 +12,7 @@ with Node.js v20. Once you have it installed, you can run:
 npm install
 
 npm run dev
+
 ```
 
 It integrates the `@burnt-labs/abstraxion` library from