Link to a website is downloaded instead of the website opening
When I enter in safari e.g. "Netflix.com" the website does not open. Instead in the safari downloads I can find a very small download file with the name "Netflix.com". It only happens for me for "Netflix.com" meaning I must have changed something to this specific weblink but I cannot figure out what. I searched everything in the safari settings - to no avail. Thank you for helping out.
MacBook Pro 15″, OS X 10.11