The callouts in the websocket guide need to be after the sample otherwise
the following warning is omitted:
asciidoctor: WARNING: guides/websocket.adoc: line 36: no callouts refer to list item 1
asciidoctor: WARNING: guides/websocket.adoc: line 38: no callouts refer to list item 2
asciidoctor: WARNING: websocket.adoc: line 36: no callouts refer to list item 1
asciidoctor: WARNING: websocket.adoc: line 38: no callouts refer to list item 2
This issue resolves the WARNING logs created due to the callout being
placed in the wrong location.
Issue #99
cf1a4b83bf