Implement Jest Tests for Mark down Editor

The Mark down Editor currently lacks Jest tests. We need to add tests to ensure its functionality and reliability.

**Tasks:**

- Identify the key functionalities of Mark down Editor.
- Write unit tests for:
- Component rendering
- User interactions
- Props and state management
- Write integration tests for:
- Any significant workflows (if applicable)
- Ensure all tests pass in the local environment and CI/CD pipeline.
- Update the documentation to include instructions on running the tests.

**Acceptance Criteria:**

- Jest tests for Mark down Editor are created and passing.

**Additional Information:**

- Any known issues or specific areas of concern related to Mark down Editor can be added here.

Start by locating the Mark down Editor component and reviewing the repository's existing Jest test setup. Cover the requested rendering, interaction, props, state, and applicable workflow checks, then verify the tests pass locally and in CI/CD and document how to run them.

Written by the indexing model from the issue text.