docs: improve Doxygen comments.

refs: #1435

Change-Id: I21624ef4eec393c82a50229a07e8277fb6ae4ddf
diff --git a/src/nlsr.cpp b/src/nlsr.cpp
index d5c0038..faf6f70 100644
--- a/src/nlsr.cpp
+++ b/src/nlsr.cpp
@@ -361,18 +361,21 @@
 
       adjacent->setFaceId(0);
 
-      // Only trigger an Adjacency LSA build if this node is changing from ACTIVE to INACTIVE
-      // since this rebuild will effectively cancel the previous Adjacency LSA refresh event
-      // and schedule a new one further in the future.
+      // Only trigger an Adjacency LSA build if this node is changing
+      // from ACTIVE to INACTIVE since this rebuild will effectively
+      // cancel the previous Adjacency LSA refresh event and schedule
+      // a new one further in the future.
       //
-      // Continuously scheduling the refresh in the future will block the router from refreshing
-      // its Adjacency LSA. Since other routers' Name prefixes' expiration times are updated
-      // when this router refreshes its Adjacency LSA, the other routers' prefixes will expire
-      // and be removed from the RIB.
+      // Continuously scheduling the refresh in the future will block
+      // the router from refreshing its Adjacency LSA. Since other
+      // routers' Name prefixes' expiration times are updated when
+      // this router refreshes its Adjacency LSA, the other routers'
+      // prefixes will expire and be removed from the RIB.
       //
-      // This check is required to fix Bug #2733 for now. This check would be unnecessary
-      // to fix Bug #2733 when Issue #2732 is completed, but the check also helps with
-      // optimization so it can remain even when Issue #2732 is implemented.
+      // This check is required to fix Bug #2733 for now. This check
+      // would be unnecessary to fix Bug #2733 when Issue #2732 is
+      // completed, but the check also helps with optimization so it
+      // can remain even when Issue #2732 is implemented.
       if (adjacent->getStatus() == Adjacent::STATUS_ACTIVE) {
         adjacent->setStatus(Adjacent::STATUS_INACTIVE);