docs: remove typo from dependencies example

Author: Bruno Dias

docs/design/operator-bundle.md

@@ -76,7 +76,7 @@ An example of a `dependencies.yaml` that specifies Prometheus operator and etcd
 ```
 dependencies:
   - type: olm.package
-    packgeName: prometheus
+    packageName: prometheus
     version: >0.27.0
   - type: olm.gvk
     group: etcd.database.coreos.com