Updated examples in event.md

[constantstress]

Changed golang style comments to sh style comments in examples // to #

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Problem/Feature

In examples // was used to start a comment, but examples are given in sh syntax.
Examples section wasn't present under first table. It is inconsistent relative to other tables.

Description of Changes:

• // were replaced with #
• Added Examples section under first table

Checklist

• My code follows the Contribution Guide
• I have self-reviewed the changes being requested
• I have made comments on pieces of code that may be difficult to understand for other editors
• I have updated the documentation (if applicable)