(DOCS-10675): Remove $literal from first $arrayToObject example (#2193)

* change  to brackets

* tech review feedback

* tech review feedback pt 2

* copy review feedback

Author: davidhou17

source/reference/operator/aggregation/arrayToObject.txt

@@ -23,7 +23,7 @@ Definition
 
      .. code-block:: none
 
-        [ [ "item", "abc123"], [ "qty", 25 ] ]
+        [ [ [ "item", "abc123" ], [ "qty", 25 ] ] ]
 
    \- OR -
 
@@ -36,7 +36,7 @@ Definition
 
      .. code-block:: none
 
-        [ { "k": "item", "v": "abc123"}, { "k": "qty", "v": 25 } ]
+        [ [ { "k": "item", "v": "abc123" }, { "k": "qty", "v": 25 } ] ] 
 
    :expression:`$arrayToObject` has the following syntax:
 
@@ -68,7 +68,7 @@ If the name of a field repeats in the array,
 
 .. list-table::
    :header-rows: 1
-   :widths: 80 20
+   :widths: 60 40
    :class: border-table
 
    * - Example
@@ -77,21 +77,24 @@ If the name of a field repeats in the array,
    * - .. code-block:: json
           :copyable: false
 
-          { $arrayToObject:  { $literal: [ 
-                { "k": "item", "v": "abc123"},
-                { "k": "qty", "v": 25 } 
-          ] } }
+          { $arrayToObject: [
+             [ { "k": "item", "v": "abc123" },
+               { "k": "qty", "v": "$qty" } ]
+          ] }
 
-     - .. code-block:: json
-          :copyable: false
+     - Given a document with the field ``qty`` and value ``25``,     
+       :expression:`$arrayToObject` returns:
 
+       .. code-block:: json
+          :copyable: false
+     
           { "item" : "abc123", "qty" : 25 }
 
    * - .. code-block:: json
           :copyable: false
 
           { $arrayToObject: { $literal:  [ 
-             [ "item", "abc123"], [ "qty", 25 ] 
+             [ "item", "abc123" ], [ "qty", 25 ] 
           ] } }
 
      - .. code-block:: json
@@ -103,7 +106,7 @@ If the name of a field repeats in the array,
           :copyable: false
 
           { $arrayToObject: { $literal: [ 
-             { "k": "item", "v": "123abc"}, 
+             { "k": "item", "v": "123abc" }, 
              { "k": "item", "v": "abc123" } 
           ] } }