A family of Microsoft word processing software products for creating web, email, and print documents.
The 2 simplest ways to Undo the conversion without having to select anything or going into a separate dialog window:
- You can follow Diane's suggestion to press Command+Z [or click Undo] after pressing the spacebar or return, or
- Press the delete key rather than Command+Z.
To disable the the feature altogether go to Word> Preferences> AutoCorrect - AutoFormat As You Type to clear the check on Internet and network paths with hyperlinks. Keep in mind that this affects all hyperlinks including URLs, so if you choose it you will have to individually create hyperlinks when you do want them.