Update globals.rst (#5193)

Author: donburch888

components/globals.rst

@@ -1,7 +1,7 @@
 Global Variables
 ----------------
 
-In some cases you might need to share a global variable across multiple lambdas. For example, global variables can be
+In some cases you might need to share a global variable across multiple lambdas, or to remember between periods of deep_sleep. For example, global variables can be
 used to store the state of a garage door.
 
 .. code-block:: yaml
@@ -46,6 +46,8 @@ Configuration variables:
   can not be restored or if state restoration is not enabled. This needs to be wrapped in quotes! Defaults to
   the C++ default value for this type (for example ``0`` for integers).
 
+Within lambdas globals don’t have a state attribute, just a value. Note in the example above the use of id(my_global_int) where other components would require id(my_component).state.
+
 .. _globals-set_action:
 
 ``globals.set`` Action