docs(README): add formatting capabilities for OpenAPI documents (#17)

Closes #16

Author: char0n

README.md

@@ -229,6 +229,14 @@ These are the current high-level element types recognized by the semantic engine
 | `security-scheme` | `server`                | `server-variable`        |
 | `swagger`         | `tag`                   | `xml`                    |
 
+### Formatting
+
+SpecLynx OpenAPI Toolkit is capable of formatting your OpenAPI Documents, whether they are written
+in JSON or YAML. Formatting preferences, like `tabSize` or whether to use tabs or spaces (`insertSpaces`)
+are read directly from your VSCode settings.
+
+![JSON/YAML Formatting](https://github.com/user-attachments/assets/06f21516-7380-4e47-ac77-31a515cd1885)
+
 
 ### Preview