Improve comment

Author: jmcarcell

include/podio/RNTupleReader.h

@@ -150,7 +150,8 @@ class RNTupleReader {
   std::unordered_map<std::string, unsigned> m_entries{};
   // Map category to a vector that contains at how many entries each reader starts
   // For example, if we have 3 readers and the first one has 10 entries, the second one 20 and the third one 30
-  // then the vector will be {0, 10, 30, 60}
+  // then the vector will be {0, 10, 30}
+  // 60 is not needed because anything after 30 will be in the last reader
   std::unordered_map<std::string, std::vector<unsigned>> m_readerEntries{};
   std::unordered_map<std::string, unsigned> m_totalEntries{};