rename CFG_ENV_IS_IN_EEPROM in CONFIG_ENV_IS_IN_EEPROM

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/README b/README
index 44b450c..4823255 100644
--- a/README
+++ b/README
@@ -2199,7 +2199,7 @@
 to save the current settings.
 
 
-- CFG_ENV_IS_IN_EEPROM:
+- CONFIG_ENV_IS_IN_EEPROM:
 
 	Use this if you have an EEPROM or similar serial access
 	device and a driver for it.