fix: add dashes to semver range example

Without that, it's causing a YAML/JSON conversion issue

Upstream-repository: operator-registry
Upstream-commit: 17ed6ab0365f7b9aba337c821b07ab6d87435e81

Author: bandrade

staging/operator-registry/docs/design/operator-bundle.md

@@ -78,7 +78,7 @@ dependencies:
   - type: olm.package
     value:
       packageName: prometheus
-      version: >0.27.0
+      version: ">0.27.0"
   - type: olm.gvk
     value:
       group: etcd.database.coreos.com