Fix example linting command

Steveb-p · web-flow · commit 937dba30c30f · 2019-07-11T13:15:06.000+02:00
Otherwise an error will be thrown from eslint: `No files matching the pattern "src/&lt;directory&gt;" were found.`
diff --git a/docs/tools/eslint.md b/docs/tools/eslint.md
@@ -47,7 +47,7 @@ In your `package.json` add to `scripts`:
 ```json
 {
   "scripts": {
-    "lint": "eslint src/**"
+    "lint": "eslint \"src/**\""
   }
 }
 ```

Original file line number	Diff line number	Diff line change
@@ -47,7 +47,7 @@ In your `package.json` add to `scripts`:
`47`	`47`	```json
`48`	`48`	`{`
`49`	`49`	`"scripts": {`
`50`		`- "lint": "eslint src/**"`
	`50`	`+ "lint": "eslint \"src/**\""`
`51`	`51`	`}`
`52`	`52`	`}`
`53`	`53`	```