Change docx folder to more appropriate "file" folder

src/file/paragraph/run/text-run.spec.ts

@@ -0,0 +1,20 @@
+import { expect } from "chai";
+
+import { Formatter } from "../../../export/formatter";
+import { TextRun } from "./text-run";
+
+describe("TextRun", () => {
+    let run: TextRun;
+
+    describe("#constructor()", () => {
+
+        it("should add text into run", () => {
+            run = new TextRun("test");
+            const f = new Formatter().format(run);
+            expect(f).to.deep.equal({"w:r": [
+                {"w:rPr": []},
+                {"w:t": [{_attr: {"xml:space": "preserve"}}, "test"]},
+            ]});
+        });
+    });
+});