Replace obsolete DebeziumDownload attribute

The attribute DebeziumDownload (exclusive to the downstream documentation) was set to a value that included both a URL and the link text for the URL.

To enable flexible use of the content in a different context, the attribute is being retired in favor of separate link {LinkDebeziumDownload} and label {NameDebeziumDownload} attributes.

Replace instances of the attribute in the following locations:

• configuration/avro.adoc:218
• transformations/content-based-routing.adoc:90
• transformations/filtering.adoc:88

This change has no effect on the community version of the documentation.