DOC-2204: Update rpk-debug-bundle example syntax

modules/reference/pages/rpk/rpk-debug/rpk-debug-bundle.adoc

@@ -53,19 +53,19 @@ as root.
 
 You can provide a list of partitions to save additional admin API requests specifically for those partitions.
 
-The partition flag accepts the format `<namespace>/[topic]/[partitions...]` where the namespace is optional, if the namespace is not provided, `rpk` will assume 'kafka'. For example:
+The partition flag accepts the format `[namespace/]topic/partition[,partition...]` where the namespace is optional. If the namespace is not provided, `rpk` will assume 'kafka'. For example:
 
 Topic 'foo', partitions 1, 2 and 3:
 
 [,bash]
 ----
---partitions foo/1,2,3
+--partition foo/1,2,3
 ----
 
 Namespace _redpanda-internal, topic 'bar', partition 2
 [,bash]
 ----
---partitions _redpanda-internal/bar/2
+--partition _redpanda-internal/bar/2
 ----
 
 If you have an upload URL from the Redpanda support team, provide it in the  --upload-url flag to upload your diagnostics bundle to Redpanda.
@@ -184,4 +184,4 @@ rpk debug bundle --logs-since "2022-02-01" --logs-size-limit 3MiB
 rpk debug bundle --namespace <namespace>
 ----
 
-// end::single-source[]
+// end::single-source[]