Fix : [#2537] Add import statement

[Ri-Sharma]

Fixes #2537

Changes: Added import statement in 'client/modules/IDE/components/Editor/index.jsx' to resolve the issue.

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is up to date with the develop branch.
• is descriptively named and links to an issue number.

[release-com]

Release Environments

This Environment is provided by Release, learn more!
To see the status of the Environment click on Environment Status below.

• p5.js-web-editor
  • app-p5-js-web-editor-develop-branch.release.editor.p5js.org/
  • preview-p5-js-web-editor-develop-branch.release.editor.p5js.org/

🔧Environment Status : https://app.release.com/public/Processing%20Foundation/env-e9c636ca91

[lindapaiste]

That's awesome that it requires so little code to implement this feature! Thanks for digging into the CodeMirror docs.