Update general-faq.mdx (#654)

Author: shell1

docs/faq/general-faq/general-faq.mdx

@@ -30,7 +30,7 @@ Normandy (https://experimenter.services.mozilla.com/legacy/) is the legacy exper
 
 - Depending when you make your change and when RS propagates to CDNs - it could take minutes to just over an hour.
 
-- Desktop clients only recompute enrollments at startup and every six hours thereafter.  
+- Desktop clients only recompute enrollments at startup and every six hours thereafter.  So if you are looking to "naturally" get enrolled in an experiment (versus using [Preview](https://experimenter.info/previewing-experiments) to force enroll) on desktop there could be an even longer delay.
 
 
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