Automatically add line breaks for long lines in Markdown

[arogachev]

Examples:

• https://github.com/yiisoft/yii-queue/blob/f70e80c37d996de7cf54330c7bf717980473102e/README.md?plain=1#L222
• https://github.com/yiisoft/yii-queue/blob/f70e80c37d996de7cf54330c7bf717980473102e/README.md?plain=1#L258
• https://github.com/yiisoft/yii-queue/blob/f70e80c37d996de7cf54330c7bf717980473102e/README.md?plain=1#L262

It's hard to edit, need to use horizontal scroll additionally. And in my opinion the line should not break early and contain the maximum whole words that can fit in.

[arogachev]

A word wrapping can be configured in IDE, but that would be IDE specific.