IoT Website - Change titles

Created by: ChristieWittEclipse

Please update the 3 instances of the words "IoT Developer Surveys" on this page to say "IoT Surveys" instead: https://iot.eclipse.org/iot-developer-surveys/ I've included a screenshot for reference.

The page now includes IoT Developer Surveys and the recent IoT Commercial Adoption Survey, so the title can be more generic. This applies for the new IoT website as well. Thanks for publishing this!