Update NWBFile.hpp

Author: oruebel

src/nwb/NWBFile.hpp

@@ -60,8 +60,9 @@ class NWBFile : public Container
   ~NWBFile();
 
   /**
-   * @brief Initializes the NWB file by opening and setting up the file
-   * structure.
+   * @brief Initializes the NWB file by setting up the file structure.
+   * 
+   * If the file is already initialized then no action will be performed.
    *
    * @param identifierText The identifier text for the NWBFile.
    * @param description A description of the NWBFile session.
@@ -224,4 +225,4 @@ class NWBFile : public Container
   std::unique_ptr<ElectrodeTable> m_electrodeTable;
 };
 
-}  // namespace AQNWB::NWB
+}  // namespace AQNWB::NWB