Add support to use backtick in TODO description

[rjanain]

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If we use backtick in the description of TODO, then next time Task Board will not load. It will appear on the screen for a moment, then it disappears. To reproduce the issue, follow the below steps.

1. Create a blank TODO.md file and open the Task Board.
2. By using the Kanban Task board, create a new task and the description of the task that contains a backtick. A sample example of TODO.md is shown below.
3. Save the document and open a new Task board. You will notice due to use of that backtick then Kanban Board will not appear.

# Project

Project Description

<em>[TODO.md spec & Kanban Board](https://bit.ly/3fCwKfM)</em>

### Todo

- [ ] This is a `test`.  

### In Progress


### Done ✓

[goto-dev-null]

+1 on this