Update README and smithery.yaml formatting

Author: winor30

README.md

@@ -1,4 +1,5 @@
 # Datadog MCP Server
+
 [![smithery badge](https://smithery.ai/badge/@winor30/mcp-server-datadog)](https://smithery.ai/server/@winor30/mcp-server-datadog)
 
 MCP server for the Datadog API, enabling incident management and more.
@@ -140,6 +141,7 @@ npx -y @smithery/cli install @winor30/mcp-server-datadog --client claude
 ```
 
 ### Manual Installation
+
 ```bash
 pnpm install
 pnpm build

smithery.yaml

@@ -17,7 +17,7 @@ startCommand:
         description: Your Datadog Application key
       datadogSite:
         type: string
-        default: ""
+        default: ''
         description: Optional Datadog site (e.g. datadoghq.eu)
   commandFunction:
     # A JS function that produces the CLI command based on the given config to start the MCP on stdio.