Update workspaces.md

Write a hint to copy assets into the src folder of the project otherwise the assets won't get copied

Author: bykof

content/cli/workspaces.md

@@ -290,6 +290,7 @@ module.exports = function(options) {
 #### Assets
 
 TypeScript compilation automatically distributes compiler output (`.js` and `.d.ts` files) to the specified output directory. It can also be convenient to distribute non-TypeScript files, such as `.graphql` files, `images`, `.html` files and other assets. This allows you to treat `nest build` (and any initial compilation step) as a lightweight **development build** step, where you may be editing non-TypeScript files and iteratively compiling and testing.
+The assets should be located in the src folder otherwise they will not be copied.
 
 The value of the `assets` key should be an array of elements specifying the files to be distributed. The elements can be simple strings with `glob`-like file specs, for example: