Improve language

doc/development/code_review.md

@@ -134,10 +134,11 @@ as the maintainer to ultimately approve and merge it.
 
 Try to review in a timely manner; doing so allows everyone involved in the merge
 request to iterate faster as the context is fresh in memory. Further, this 
-improves contributors' experiences significantly. Provided full availability;
-reviewing within two work days should be the aim. If you don't think you'll be
-able to review a merge request within that time, let the author know as soon as
-possible.
+improves contributors' experiences significantly. Reviewers should aim to review
+within two working days from the date they were assigned the merge request. If 
+you don't think you'll be able to review a merge request within that time, let 
+the author know as soon as possible. When the author of the merge request has not
+heard anything after two days, a new reviewer should be assigned.
 
 Maintainers should check before merging if the merge request is approved by the
 required approvers.