step-registry/sandboxed-containers-operator: Remove "documentation" from generated prowjob

The documentation section in the generated prowjob is not valid for the
ci-operator, resulting on job run via API to fail.

Signed-off-by: Wainer dos Santos Moschetta <[email protected]>

Author: wainersm

ci-operator/step-registry/sandboxed-containers-operator/create-prowjob/sandboxed-containers-operator-create-prowjob-commands.sh

@@ -341,9 +341,8 @@ command_create() {
     # Create the prowjob configuration file
 
     cat > "${OUTPUT_FILE}" <<EOF
-documentation: |-
-  DO NOT EDIT DIRECTLY.
-  This is generated by the sandboxed-containers-operator-create-prowjob-commands.sh script.
+#  DO NOT EDIT DIRECTLY.
+#  This is generated by the sandboxed-containers-operator-create-prowjob-commands.sh script.
 base_images:
   tests-private:
     name: tests-private