docs: added reference for JS Client (#1629)

* added reference for JS Client

* added reference for JS Client

* added reference for JS Client

docs/content/references/js-client/classes/internal.LineItemAdjustment.md

@@ -0,0 +1,97 @@
+---
+displayed_sidebar: jsClientSidebar
+---
+
+# Class: LineItemAdjustment
+
+[internal](../modules/internal.md).LineItemAdjustment
+
+## Properties
+
+### amount
+
+• **amount**: `number`
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:10
+
+___
+
+### beforeInsert
+
+• `Private` **beforeInsert**: `any`
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:12
+
+___
+
+### description
+
+• **description**: `string`
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:7
+
+___
+
+### discount
+
+• **discount**: [`Discount`](internal.Discount.md)
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:8
+
+___
+
+### discount\_id
+
+• **discount\_id**: `string`
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:9
+
+___
+
+### id
+
+• **id**: `string`
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:4
+
+___
+
+### item
+
+• **item**: [`LineItem`](internal.LineItem.md)
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:6
+
+___
+
+### item\_id
+
+• **item\_id**: `string`
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:5
+
+___
+
+### metadata
+
+• **metadata**: [`Record`](../modules/internal.md#record)<`string`, `unknown`\>
+
+#### Defined in
+
+packages/medusa/dist/models/line-item-adjustment.d.ts:11