Fix a loopy comment

Summary: I wrote this earlier in D14680 but have now realized that it's the same sentence twice when read carefully.

Test Plan: read more carefully

Reviewers: chad

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D14687

src/applications/transactions/view/PhabricatorApplicationTransactionView.php

@@ -386,7 +386,9 @@ class PhabricatorApplicationTransactionView extends AphrontView {
       $results = array();
 
       // Sort transactions within the group by action strength, then by
-      // within actions of similar strength.
+      // chronological order. This makes sure that multiple actions of the
+      // same type (like a close, then a reopen) render in the order they
+      // were performed.
       $strength_groups = mgroup($group, 'getActionStrength');
       krsort($strength_groups);
       foreach ($strength_groups as $strength_group) {