Fix typo in blacklist deprecation comment

Change-Id: I152b8c53921e134f5463d1a5211f7c722ad9e56b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1828062
Auto-Submit: Sophie Chang <sophiechang@chromium.org>
Reviewed-by: Doug Arnett <dougarnett@chromium.org>
Commit-Queue: Sophie Chang <sophiechang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#700433}

components/previews/core/previews_black_list.h

@@ -55,12 +55,12 @@ enum class PreviewsEligibilityReason {
   // DEPRECATED: The host is explicitly blacklisted by the server, so the user
   // was not shown
   // a preview.
-  // Replaced by NOT_ALLOWED_BY_OPTIMIZATION_HINTS.
+  // Replaced by NOT_ALLOWED_BY_OPTIMIZATION_GUIDE.
   DEPRECATED_HOST_BLACKLISTED_BY_SERVER = 9,
   // DEPRECATED: The host is not whitelisted by the server for a preview
   // decision that uses
   // server optimization hints.
-  // Replaced by NOT_ALLOWED_BY_OPTIMIZATION_HINTS.
+  // Replaced by NOT_ALLOWED_BY_OPTIMIZATION_GUIDE.
   DEPRECATED_HOST_NOT_WHITELISTED_BY_SERVER = 10,
   // The preview is allowed but without an expected check of server optimization
   // hints because they are not enabled (features::kOptimizationHints).