Update 1-1-3-hello-triangle.md for #95 (#124)

* Update 1-1-3-hello-triangle.md

* rerun the git

* applied the desired changes of Deccer

* break if 100 long

* fixed the 2 non sub 100's

Author: 16-Bit-Dog

CONTRIBUTING.md

@@ -22,6 +22,7 @@ to watch what you are doing you can run (and should)
 ```bash
 mkdocs serve
 ```
+(in windows if you did not add to path: ```python -m mkdocs serve```)
 
 that will provide a live version of your edit, running on your local machine.