[orca] Fix bug in braille presentation of tree items

[Joanmarie Diggs <joanied src gnome org>]

commit 8fbe4aa4af7a490230ca01925a55bdac9f83ea70
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Nov 18 14:36:30 2020 +0100

    Fix bug in braille presentation of tree items
    
    We should be displaying the nodeLevel; not the nesting level.

 src/orca/formatting.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/orca/formatting.py b/src/orca/formatting.py
index da0137684..3b0026653 100644
--- a/src/orca/formatting.py
+++ b/src/orca/formatting.py
@@ -831,7 +831,7 @@ formatting = {
         pyatspi.ROLE_TREE_ITEM: {
             'unfocused': '((substring and ' + BRAILLE_TEXT + ')\
                           or ([Component(obj, asString(labelOrName + expandableState))]\
-                              + (nestingLevel and [Region(" " + asString(nestingLevel))])))',
+                              + (nodeLevel and [Region(" " + asString(nodeLevel))])))',
             },
         #pyatspi.ROLE_TREE: 'default'
         #pyatspi.ROLE_TREE_TABLE: 'default'