fix a dead link

versioned_docs/version-0.9/db-cloud-shared/clients/otlp-integration.md

@@ -7,7 +7,7 @@ To send OpenTelemetry Metrics to GreptimeDB through OpenTelemetry SDK libraries,
 * URL: `https://<host>/v1/otlp/v1/metrics`
 * Headers:
   * `X-Greptime-DB-Name`: `<dbname>`
-  * `Authorization`: `Basic` authentication, which is a Base64 encoded string of `<username>:<password>`. For more information, please refer to [Authentication](https://docs.greptime.com/user-guide/deployments/authentication) and [HTTP API](https://docs.greptime.com/user-guide/protocols/http#authentication)
+  * `Authorization`: `Basic` authentication, which is a Base64 encoded string of `<username>:<password>`. For more information, please refer to [Authentication](https://docs.greptime.com/user-guide/deployments/authentication/static/) and [HTTP API](https://docs.greptime.com/user-guide/protocols/http#authentication)
 
 The request uses binary protobuf to encode the payload, so you need to use packages that support `HTTP/protobuf`. For example, in Node.js, you can use [`exporter-trace-otlp-proto`](https://www.npmjs.com/package/@opentelemetry/exporter-trace-otlp-proto); in Go, you can use [`go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp); in Java, you can use [`io.opentelemetry:opentelemetry-exporter-otlp`](https://mvnrepository.com/artifact/io.opentelemetry/opentelemetry-exporter-otlp); and in Python, you can use [`opentelemetry-exporter-otlp-proto-http`](https://pypi.org/project/opentelemetry-exporter-otlp-proto-http/).