Bug with web links to YAML and Working Remotely Appendices

[Damien Irving]

In the side panel of the web version of the book (at https://merely-useful.github.io/py-rse/), clicking on "L YAML" and "M Working Remotely" takes you to the glossary entries for YAML and ssh instead of the content in chatpers/yaml.Rmd and chapters/ssh.Rmd.