[x] The title of this PR follows the location of change: brief description of change format, e.g. Data types exercise: Update spec files
1. Because:
Exercise 9 was recently created for lesson 9, Debugging, in the basic ruby section. The exercise wasn't listed with the others in the "Contents" section of the readme.
2. This PR:
Added exercise 9 to the "Contents" section of the README.md
Complete the following REQUIRED checkboxes:
location of change: brief description of changeformat, e.g.Data types exercise: Update spec files1. Because:
Exercise 9 was recently created for lesson 9, Debugging, in the basic ruby section. The exercise wasn't listed with the others in the "Contents" section of the readme.
2. This PR:
3. Additional Information:
Here is where I brought it up on discord