Word 2016 and 2013 will automatically add hyperlink to any website URL or internet address after you finish typing the text. This is the default behaviour in Word and you can disable this feature using the option available as part of AutoCorrect.
Step 1: Open any document in Word 2013, click File menu and select Options from the list.
Step 2: In the Word Options Window, click the AutoCorrect Options available under Proofing tab.
Step 3: Click the AutoFormat As You Type tab in AutoCorrect Window.
Step 4: Then navigate to Replace as you type section and un mark the checkbox option with label as Internet and network paths with hyperlinks. Click OK button to confirm and save the changes.
Now hyperlink will not be added whenever you type any internet address in a Word document.