ref: fix a typo (#2556)

mostly to validate the new sentry dockerfile

Author: asottile-sentry

CHANGELOG.md

@@ -277,7 +277,7 @@ By: @hubertdeng123 (#2074)
 
 - fix "services.web.healthcheck.retries must be a number" (#1482) by @yuval1986
 - Add volume for nginx cache (#1511) by @glensc
-- snuba: New subscriptions infrastucture rollout (#1507) by @lynnagara
+- snuba: New subscriptions infrastructure rollout (#1507) by @lynnagara
 - Ease modification of base image (#1479) by @spawnia
 
 ## 22.5.0