Update README.md

Author: swhitty

README.md

@@ -14,7 +14,7 @@
 - [Command Line Tool](#command-line-tool)
   - [Installation](#installation)
   - [SF Symbol](#sf-symbol)
-  - [Alignment](#alignment)
+    - [Alignment](#alignment)
   - [Swift Code Generation](#swift-code-generation)
 - [Credits](#credits)