format name to be valid metric prefix

packages/core-utils/src/base-service.ts

@@ -26,7 +26,7 @@ export class BaseService<T> {
     this.name = name
     this.options = mergeDefaultOptions(options, optionSettings)
     this.logger = new Logger({ name })
-    this.metrics = new Metrics({ prefix: name })
+    this.metrics = new Metrics({ prefix: name.split(' ').join('_') })
   }
 
   /**