Fix nested list

Author: nelsonov

examples/default/README.md

@@ -6,8 +6,8 @@ The config file, if used, would normally be placed somewhere like
 Two values are recognized:
 
 * `ENV_GPIO` specifies the GPIO pin to listen on
-**  This is the GPIO pin number, not the board's pin number
+    + This is the GPIO pin number, not the board's pin number
 * `ENV_STATE` specifies the state to listen for
-**  *RISING* or *FALLING*
+    + *RISING* or *FALLING*
 
 See the top-level README for more information