[yard] Missing Spec

[AlanSyue]

Sanity checks

• [X] My issue relates to a specific CLI completion spec (e.g. git checkout is missing options in git completion spec). If your issue is more general, please create your issue here: withfig/fig
• [X] I have searched github.com/withfig/autocomplete/issues and there are no duplicates of my issue
• [X] I would like to work on this.

What CLI tool does this relate to?

yard

Which statement makes the most sense?

This completion spec does not exist

Issue Details

https://yardoc.org/

Usage: yard <command> [options]

Commands:
config   Views or edits current global configuration
diff     Returns the object diff of two gems or .yardoc files
display  Displays a formatted object
doc      Generates documentation
gems     Builds YARD index for gems
graph    Graphs class diagram using Graphviz
help     Retrieves help for a command
i18n     Generates .pot file from source code and extra documentation
list     Lists all constant and methods. Uses `yard doc --list`
markups  Lists all available markup types and libraries
ri       A tool to view documentation in the console like `ri`
server   Runs a local documentation server
stats    Prints documentation statistics on a set of files