Here's how you (and your students) can add preferred pronouns and make other customizations to the way your name is displayed in Moodle:
1. Open your Moodle Profile:
2. Select Edit Profile:
3. Type to add the pronouns to the end of the Alternate name field:
4. Scroll to the bottom and select Update Profile:
Your Moodle Profile will be updated, and your name, as visible to other Moodle users, will look like this: