Change docx folder to more appropriate "file" folder

src/file/drawing/inline/graphic/graphic-data/index.ts

@@ -0,0 +1,10 @@
+import { XmlComponent } from "../../../../xml-components";
+import { Pic } from "./pic";
+
+export class GraphicData extends XmlComponent {
+
+    constructor(referenceId: number) {
+        super("a:graphicData");
+        this.root.push(new Pic(referenceId));
+    }
+}