Fix incorrect Event call name in USBInterrupt.c.

LUFA/ManPages/FutureChanges.txt

@@ -12,6 +12,9 @@
   *  or post your suggestion as an enhancement request to the project bug tracker.
   *
   *  <b>Targeted for This Release:</b>
+  *  - N/A
+  *
+  *  <b>Targeted for Future Releases:</b>
   *  - Host Mode Class Drivers
   *     -# Make new host class drivers
   *     -# Document new host class drivers
@@ -19,8 +22,6 @@
   *     -# Re-enable Host mode Class driver builds after completion
   *     -# Update Host mode Class Driver demo .txt files
   *  - Add standardized descriptor names to device and host class driver structures
-  *
-  *  <b>Targeted for Future Releases:</b>
   *  - Remake AVRStudio project files
   *  - Add detailed overviews of how each demo works
   *  - Master LUFA include file rather than per-module includes