[SPARK-21924][DOCS] Update structured streaming programming guide doc

## What changes were proposed in this pull request?

Update the line "For example, the data (12:09, cat) is out of order and late, and it falls in windows 12:05 - 12:15 and 12:10 - 12:20." as follow "For example, the data (12:09, cat) is out of order and late, and it falls in windows 12:00 - 12:10 and 12:05 - 12:15." under the programming structured streaming programming guide.

Author: Riccardo Corbella <r.corbella@reply.it>

Closes #19137 from riccardocorbella/bugfix.