AWS search extension allows you to have a fuzzy search on the AWS documentation right from the address bar of your browser and is available for Google Chrome / Chromium, Microsoft Edge and Mozilla Firefox from the github releases (extension store submissions pending/planned).
If, for example, you want to know some specific detail on the
AWS::ECS::TaskDefinition for the cloudformation infrastructure as code DSL you can just type:
aws a:e:taskdef into your searchbar and hit enter.
See it in action for yourself:
Although this extension is quite young it works surprisingly well, so give it a try!