Fixed documentation of printer profile API

Closes #1732

docs/api/printerprofiles.rst

@@ -34,7 +34,8 @@ Retrieve all printer profiles
       HTTP/1.1 200 OK
       Content-Type: application/json
 
-      [
+      {
+        "profiles": [
           {
             "id": "_default",
             "name": "Default",
@@ -118,6 +119,7 @@ Retrieve all printer profiles
             }
           },
         ]
+      }
 
 
 .. _sec-api-printerprofiles-add:
@@ -537,6 +539,41 @@ Profile
      - 0..1
      - ``float``
      - The height of the print volume
+   * - ``volume.custom_box``
+     - 0..1
+     - ``boolean`` or ``object``
+     - If the printer has a custom bounding box where the print head can be safely moved to, exceeding the defined print
+       volume, that bounding box will be defined here. Otherwise (safe area == print volume) this value will be ``false``.
+   * - ``volume.custom_box.min_x``
+     - 0..1
+     - ``float``
+     - Minimum X coordinate defining the safe custom bounding box. Smaller value than the minimum X coordinate of the
+       print volume.
+   * - ``volume.custom_box.max_x``
+     - 0..1
+     - ``float``
+     - Maximum X coordinate defining the safe custom bounding box. Larger value than the maximum X coordinate of the
+       print volume.
+   * - ``volume.custom_box.min_y``
+     - 0..1
+     - ``float``
+     - Minimum Y coordinate defining the safe custom bounding box. Smaller value than the minimum Y coordinate of the
+       print volume.
+   * - ``volume.custom_box.max_y``
+     - 0..1
+     - ``float``
+     - Maximum Y coordinate defining the safe custom bounding box. Larger value than the maximum Y coordinate of the
+       print volume.
+   * - ``volume.custom_box.min_z``
+     - 0..1
+     - ``float``
+     - Minimum Z coordinate defining the safe custom bounding box. Smaller value than the minimum Z coordinate of the
+       print volume.
+   * - ``volume.custom_box.max_z``
+     - 0..1
+     - ``float``
+     - Maximum Z coordinate defining the safe custom bounding box. Larger value than the maximum Z coordinate of the
+       print volume.
    * - ``heatedBed``
      - 0..1
      - ``boolean``