docs(samples): create and delete scheduled query

[pmakani]

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

[codecov]

Codecov Report

Merging #225 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #225   +/-   ##
=========================================
  Coverage     74.35%   74.35%           
  Complexity      108      108           
=========================================
  Files             7        7           
  Lines           936      936           
  Branches         18       18           
=========================================
  Hits            696      696           
  Misses          220      220           
  Partials         20       20           

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