text: Exercise 3

[github-actions]

Text Exercise 3: Origami instructions

A person following along with an origami tutorial suspects that the
instructions are incorrect. Here is their feedback:

The origami fish instructions are missing at least one step.
I followed the instructions and did not get a fish.

Take a look at the instructions origami.md

• Are there missing steps?
• Are the steps in the correct order?

Take a look at the pull request

• Does the pull request address the issue?
• Are there any unnecessary or incorrect changes?
• What would improve the pull request?
• Would you write the instructions differently for adults versus children?