* jupyter/kernels.scm (sxml->html-string): Rename to...
(sxml->xml-string): ... this.
(reply-shtml): Adjust accordingly.
* guix-jupyter-kernel.scm (reply-for-environment-kernel): Likewise.
* guix/jupyter/kernel.scm (build-event-reporter)
(call-with-build-progress-report): Likewise.