Database: fix typo in Comcast domain

[ghost]

When I installed the parser via PHP Composer, in my referers.json I saw this typo in domain:

"Comcast": {
            "domains": [
                "serach.comcast.net"
            ], 
            "parameters": [
                "q"
            ]
        }, 

And then I looked at the referers.yml file in the repo and saw a duplicate of Comcast:

https://github.com/snowplow/referer-parser/blob/master/resources/referers.yml#L774

I'm not sure how the lists are compiled or what the source is but I'm sure with this information you'll be able to fix it everywhere it occurs :)