Update SteemConnect tutorial to match example in devportal-tutorials-js

[relativityboy]

Use branch 231-tutorials for commits Links to devportal-tutorials-js

AC

• [x] links to devportal-tutorials-js AND to specific tutorial
• [x] tutorial follows code from example in devportal-tutorials-js

[relativityboy]

We're going to want to make it even nicer, but this suffices.