Update ToolHive reference docs for v0.2.0 (#68)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

docs/toolhive/reference/cli/thv_run.md

@@ -69,7 +69,7 @@ thv run [flags] SERVER_OR_IMAGE_OR_PROTOCOL [-- ARGS...]
       --otel-endpoint string                  OpenTelemetry OTLP endpoint URL (e.g., https://api.honeycomb.io)
       --otel-env-vars stringArray             Environment variable names to include in OpenTelemetry spans (comma-separated: ENV1,ENV2)
       --otel-headers stringArray              OpenTelemetry OTLP headers in key=value format (e.g., x-honeycomb-team=your-api-key)
-      --otel-insecure                         Disable TLS verification for OpenTelemetry endpoint
+      --otel-insecure                         Connect to the OpenTelemetry endpoint using HTTP instead of HTTPS
       --otel-sampling-rate float              OpenTelemetry trace sampling rate (0.0-1.0) (default 0.1)
       --otel-service-name string              OpenTelemetry service name (defaults to toolhive-mcp-proxy)
       --permission-profile string             Permission profile to use (none, network, or path to JSON file)

static/api-specs/toolhive-api.yaml

@@ -124,6 +124,10 @@ components:
             type: string
           type: array
           uniqueItems: false
+        custom_metadata:
+          additionalProperties: {}
+          description: CustomMetadata allows for additional user-defined metadata
+          type: object
         description:
           description: Description is a human-readable description of the server's
             purpose and functionality