Update README.md

Author: Jason2866

README.md

@@ -1,7 +1,7 @@
 # Arduino_IDF_BLE_scan example using 3rd party NimBLE stack
 
 BLE scan example, using the great h2zero NimBLE implementation. The needed NimBLE lib is loaded via the IDF component manager -> `idf_component.yml`.
-Mandantory not to forget to switch Arduino included BLE libs.
+Mandantory not to forget to switch off Arduino included BLE libs.
 Done in `sdkconfig.defaults`
 
 Thx @h2zero for the great BLE library.