Update README.md

README.md

@@ -1,6 +1,7 @@
 # LittleFS_esp32
 
-#### ***Notice: The Library is been integrated to [Arduino esp32 core idf-release/v4.2 branch](https://github.com/espressif/arduino-esp32/tree/idf-release/v4.2 ) for future major core release. On built-in library, #define tweaks below will be unavailable.***
+#### ***Notice: The Library is been integrated to [Arduino esp32 core v2](https://github.com/espressif/arduino-esp32/tree/master/libraries/LITTLEFS )  
+On built-in library, #define tweaks below will be unavailable.***
 
 
 ## LittleFS library for arduino-esp32