Fix missing url for operator_install
@@ -459,7 +459,7 @@ The following guides build off the operator created in this example, adding adva
Also see the [advanced topics][advanced_topics] doc for more use cases and under the hood details.
-
+[operator_install]: https://sdk.operatorframework.io/docs/installation/install-operator-sdk/
[go_tool]:https://golang.org/dl/
[docker_tool]:https://docs.docker.com/install/
[kubectl_tool]:https://kubernetes.io/docs/tasks/tools/install-kubectl/
