[#194] Update the Workflows README about the Publish Wiki Workflow

[bterone]

Closes https://github.com/nimblehq/elixir-templates/issues/194

What happened 👀

✅ Update workflow README to include information about test and publish wiki workflows

✔️ Updated the text a bit to remove newlines. There were a lot of new lines generated in the README when testing.

Insight 📝

Following existing implementation with test workflow and deploy to heroku code

Proof Of Work 📹

Tests pass 🎉

Tested by creating a new project and it adds the relevant sections

[andyduong1920]

Hi, @bterone might I know what this badge means 🤔

[bterone]

Hi, @bterone might I know what this badge means 🤔

It got auto-added because of my LinearB plugin 😅 I removed it 👍