Ensure that developer guide does not mention deprecated and removed c…

…ode. (#12839)

Examples in the developer guide were still using old style of controlTypes constants. In addition the fact that sayAllHandler has been moved into speech has not been reflected.

Developer guide has been updated.

devDocs/developerGuide.t2t

@@ -350,9 +350,9 @@ For example, the Ok button just discussed could be a widget in a Java applicatio
 NVDA Objects have many properties.
 Some of the most useful are:
 - name: the label of the control.
-- role: one of the ROLE_* constants from NVDA's controlTypes module.
+- role: one of the Role.* constants from NVDA's controlTypes module.
 Button, dialog, editableText, window and checkbox are examples of roles.
-- states: a set of 0 or more of the STATE_* constants from NVDA's controlTypes module.
+- states: a set of 0 or more of the State.* constants from NVDA's controlTypes module.
 Focusable, focused, selected, selectable, expanded, collapsed and checked are some examples of states.
 - value: the value of the control; e.g. the percentage of a scroll bar or the current setting of a combo box.
 - description: a sentence or two describing what the control does (usually the same as its tooltip).
@@ -481,7 +481,7 @@ The following keyword arguments can be used when applying the script decorator:
 - allowInSleepMode: A boolean indicating whether this script should run when sleep mode is active.
   This option defaults to False.
 - resumeSayAllMode: The say all mode that should be resumed when active before executing this script.
-  The constants for say all mode are prefixed with CURSOR_ and specified in the sayAllHandler modules.
+  The constants for say all mode can be found in the CURSOR enum in speech.sayAll.
   If resumeSayAllMode is not specified, say all does not resume after this script.
 -
 
@@ -649,7 +649,7 @@ import ui
 class AppModule(appModuleHandler.AppModule):
 
 	def chooseNVDAObjectOverlayClasses(self, obj, clsList):
-		if obj.windowClassName == "Edit" and obj.role == controlTypes.ROLE_EDITABLETEXT:
+		if obj.windowClassName == "Edit" and obj.role == controlTypes.Role.EDITABLETEXT:
 			clsList.insert(0, EnhancedEditField)
 
 class EnhancedEditField(IAccessible):