Fix source block delimiters for terminal output.
Fix source block delimiters for terminal output.

4 or more dashes are required for AsciiDoc to recognize a block delimiter. Otherwise, the block will default to no delimiter and print the "---" in the output before and after the content.

vikram-redhat/openshift-docs,vikram-redhat/openshift-docs,vikram-redhat/openshift-docs,vikram-redhat/openshift-docs,vikram-redhat/openshift-docs