Clarify insert documentation

ConflictSet.cpp

@@ -2882,9 +2882,9 @@ checkMaxBetweenExclusiveImpl<true>(Node *n, int begin, int end,
 #endif
 
 // Returns a pointer to the newly inserted node.  Caller must set
-// `entryPresent`, and `entry` fields.  The search path of the result will have
-// `maxVersion` at least `writeVersion` as a postcondition. Nodes along the
-// search path to `key` may be invalidated.
+// `entryPresent`, and `entry` fields.  All nodes along the search path of the
+// result will have `maxVersion` set to `writeVersion` as a postcondition. Nodes
+// along the search path may be invalidated.
 [[nodiscard]] Node *insert(Node **self, std::span<const uint8_t> key,
                            InternalVersionT writeVersion, WriteContext *tls,
                            ConflictSet::Impl *impl) {