Merge pull request #20635 from jboxman/gh-20479

`channel` must be a string

Author: jboxman

modules/olm-testing-operator-catalog-image.adoc

@@ -102,5 +102,5 @@ spec:
   source: custom-redhat-operators
   sourceNamespace: my-ns
   name: servicemeshoperator
-  channel: 1.0
+  channel: "1.0"
 ----