AO3-6232 Fix support ticket referer field #4764

Job	Run time
rake db:otwseed	1m 46s
rspec spec/controllers	12m 57s
rspec spec/models	5m 50s
rspec --exclude-pattern 'spec/{controllers,models}/*/.rb'	8m 12s
cucumber features/admins	7m 19s
cucumber features/bookmarks	5m 16s
cucumber features/collections	6m 37s
cucumber features/comments_and_kudos	7m 2s
cucumber features/gift_exchanges	7m 52s
cucumber features/importing	3m 32s
cucumber features/other_a	10m 41s
cucumber features/other_b	6m 55s
cucumber features/prompt_memes_a	4m 37s
cucumber features/prompt_memes_b	3m 31s
cucumber features/prompt_memes_c	5m 30s
cucumber features/search	8m 34s
cucumber features/tag_sets	4m 2s
cucumber features/tags_and_wrangling	8m 33s
cucumber features/users	5m 2s
cucumber features/works	12m 49s
	2h 16m 37s

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