ammend clarifying comment for duplicate instance detection (#31008)

gossip/src/crds_value.rs

@@ -439,14 +439,12 @@ impl NodeInstance {
         Self { wallclock, ..*self }
     }
 
-    // Returns true if the crds-value is a duplicate instance
-    // of this node, with a more recent timestamp.
-    // The older instance is considered the duplicate instance because:
-    // - If a staked node is restarted it will receive its old instance value
-    //   from gossip. Considering the new instance as the duplicate would
-    //   prevent the node from restarting.
-    // - Similarly, hotswap relies on the the old instance being considered the
-    //   duplicate instance.
+    // Returns true if the crds-value is a duplicate instance of this node,
+    // with a more recent timestamp.
+    // The older instance is considered the duplicate instance. If a staked
+    // node is restarted it will receive its old instance value from gossip.
+    // Considering the new instance as the duplicate would prevent the node
+    // from restarting.
     pub(crate) fn check_duplicate(&self, other: &CrdsValue) -> bool {
         match &other.data {
             CrdsData::NodeInstance(other) => {