[Bug]: Course using custom on-chain programs has a spelling mistake.

[abhirajthakur]

Describe the bug:
There is a spelling mistake in the 'Using custom on-chain programs' course page

Steps to reproduce the behavior:

1. Go to soldev.app/course/intro-to-custom-on-chain-programs
2. Scroll down to 'Lab - wriuting transaction for the ping counter program'
3. See error

Expected behavior:
The word should be writing instead of wriuting.

Screenshots:

[ATREAY]

Hey @abhirajthakur, can I work on this issue if you're not currently working on it?

[abhirajthakur]

Yeah sure. Go ahead.