DOCS: Missing chdir command in Setup Section to be copy and play capable

[irkode]

Following the Startup section in README.md I found the following problems

1. missing chdir command (module setup)

That won't work cause we are not in the new site folder. to copy and play the code we should add the chdir commend (it's present in the submodule variant)

Using the theme as Hugo module

First create a new Hugo site by running the following command:

hugo new site myblog

Initialize your new Hugo site as hugo module by running the following command:

cd myblog                               #MISSING
hugo mod init github.com/USER/REPO

2. missing chdir command (submodule setup)

Although it's said that we have to be in the exampleSite folder I would add the chdircommand here, to enable_copy and play_

2. Using the theme as Git submodule

...
To preview the theme with example content, run the following command from the exampleSite directory:

cd themes/hugo-blog-awesome/example-site    # MISSING
hugo server --themesDir ../..

just filed the PR