August 23 content design updates

[m-sullivan7]

• Added telephone numbers to ODI style guide
• Updated Recommended reading: content design
  • Removed gov.uk word list
  • Added Australian Government Style Manual
  • Added word substitution list, including 2 new word lists

[github-actions[bot]]

Preview site available at aug-23-content-design-updates.pr.hub.innovation.ca.gov.