doc: fix debug/informational options wrong defaults

Fixes: #86021
Documentation erroneously states CONFIG_DEBUG option is enabled by default.

Signed-off-by: Butch Warns <[email protected]>

Author: butchwarns

doc/develop/optimizations/footprint.rst

@@ -40,14 +40,16 @@ peripherals in your project configuration, for example::
 Various Debug/Informational Options
 ***********************************
 
-The following options are enabled by default to provide more information about
-the running application and to provide means for debugging and error handling:
+The following options output more information about
+the running application and provide means for debugging and error handling:
 
 :kconfig:option:`CONFIG_BOOT_BANNER`
   This option can be disabled to save a few bytes.
 
 :kconfig:option:`CONFIG_DEBUG`
-  This option can be disabled for production builds
+  This option can be enabled for debug builds.
+
+Note that the boot banner is enabled by default.
 
 
 MPU/MMU Support