updates to insert a new taxpayer.

[r0b14]

Before submitting this pull request, please go through the checklist below.
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• I have added a screenshot from browser with my changes
• There are no errors in the console
• I had fun going through this tutorial (ノ^o^)ノ and learned on the way ٩(＾◡＾)۶
• There are some things I'd like to improve in this tutorial. I have written them below.

1. 

2. Regarding tutorial improvements: I initially had some questions regarding the type of fork I could have made. 1. whether it would be the option where the repository is actually a contribution (to contribute to the parent project) or 2. whether the project would be "cloned" entirely for me, without having a contribution relationship (for my own purposes).
   I suggest including a description explaining the differences between the options, which would make it more entertaining. Of course, there's always the option of searching online.