Polish producing-and-consuming-messages.adoc

[ngocnhan-tran1996]

• Fix typos
• Update reference links
• Update source block with language attribute

[kdelay]

Checked the signature edits against main: StreamBridge.send does name the second parameter binderName, PollableSource.poll(H, ParameterizedTypeReference<?>) does return boolean, and the _define_new_and_manage_existing_bindings anchor exists in the published HTML. All three are correct.

Two leftovers:

1. The section title is still Using specific binder type with StreamBridge while its body now says binderName. Worth renaming the title while keeping the explicit ID.
2. binding_visualization_control.adoc still has two Markdown-fenced blocks (lines 133, 145).