fix: mismatch between sample code and text (#575)

Author: mrwho

Diff for: docs/subpath.md

@@ -33,7 +33,7 @@ server {
 ```
 
 This will tell the application to serve the application and relevant elements under
-`/some/deep/map`.
+`/hassio/ingress/`.
 
 In case you are using the [ingress of Home Assistant](https://www.home-assistant.io/blog/2019/04/15/hassio-ingress/) you will want to
 pick up the `X-Ingress-Path;` and map it, something along

Diff for: test/lib/renderIndex.test.js

@@ -23,12 +23,19 @@ const mockResponse = {
 describe('#renderIndex', () => {
   describe('Processing configuration', () => {
     let renderIndex
+    let mockedReaddir
 
     beforeEach(() => {
       renderIndex = rewire('../../lib/renderIndex')
       renderIndex.__set__('webConfig', {
         base: '/configured/path'
       })
+      mockedReaddir = sinon.stub(fs, 'readdirSync')
+      mockedReaddir.returns([])
+    })
+
+    afterEach(() => {
+      mockedReaddir.restore()
     })
 
     it('uses the base from the `X-External-Path` header', () => {