fix list syntax

Author: aaronpk

docs/specification/draft/basic/authorization.mdx

@@ -535,10 +535,10 @@ cannot be misused across different services.
 
 There are several authorization extensions to the core protocol that define additional authorization mechanisms. These extensions are:
 
-* **Optional** - Implementations can choose to adopt these extensions
-* **Additive** - Extensions do not modify or break core protocol functionality; they add new capabilities while preserving core protocol behavior
-* **Composable** - Extensions are modular and designed to work together without conflicts, allowing implementations to adopt multiple extensions simultaneously
-* **Versioned independently** - Extensions follow the core MCP versioning cycle but may adopt independent versioning as needed
+- **Optional** - Implementations can choose to adopt these extensions
+- **Additive** - Extensions do not modify or break core protocol functionality; they add new capabilities while preserving core protocol behavior
+- **Composable** - Extensions are modular and designed to work together without conflicts, allowing implementations to adopt multiple extensions simultaneously
+- **Versioned independently** - Extensions follow the core MCP versioning cycle but may adopt independent versioning as needed
 
 A list of supported extensions can be found here: