[Docs] Move into [docs] folder and other minor fixes (#1769)

* [Docs] Move into docs folder and other minor fixes

* Move into [docs] folder

* Fix minor formatting

* Create detailed-docs.md

Moving current Readme contents into a separate detailed-docs.md file. Added one additional section "Getting Started" to have the getting started link. Rest of the file is as is from the current Readme.md

This file would be linked from a new simplified Readme (to be raised a separate PR)

docs/Actions-Runner-Controller-Overview.md

@@ -1,7 +1,7 @@
 ## Introduction
-This document provides a high level overview of Actions Runner Controller (ARC). ARC enables running Github Actions Runners on Kubernetes (K8s) clusters.
+This document provides a high-level overview of Actions Runner Controller (ARC). ARC enables running Github Actions Runners on Kubernetes (K8s) clusters.
 
-This document provides a background of Github Actions, self-hosted runners and ARC overview. By the end of the doc, the reader should have a foundation with basic scenarios and be capable of reviewing other advanced topics.
+With this overview, you can get a foundation of basic scenarios and be capable of reviewing other advanced topics.
 
 ## GitHub Actions
 [GitHub Actions](https://github.com/features/actions) is a continuous integration and continuous delivery (CI/CD) platform to automate your build, test, and deployment pipeline. 

docs/QuickStartGuide.md

@@ -15,9 +15,7 @@ In this guide, we will setup prerequistes, deploy Actions Runner controller (ARC
 
 <details><summary><sub>Create a K8s cluster, if not available.</sub></summary>
    <sub>
-If you don't have a K8s cluster, you can install a local environment using minikube. For more information, see "[Installing minikube](https://minikube.sigs.k8s.io/docs/start/)."
-     
-     "[Using workflows](/actions/using-workflows)."
+If you don't have a K8s cluster, you can install a local environment using minikube. For more information, see <a href="https://minikube.sigs.k8s.io/docs/start/">"Installing minikube."</a>
    </sub>
 </details>
 
@@ -33,7 +31,7 @@ kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/
 
 
 :two: Next, Generate a Personal Access Token (PAT) for ARC to authenticate with GitHub.
-   - Login to GitHub account and Navigate to https://github.com/settings/tokens/new.
+   - Login to GitHub account and Navigate to "[Create new Token](https://github.com/settings/tokens/new)."
    - Select  **repo**.
    - Click **Generate Token** and then copy the token locally ( we’ll need it later).
 
@@ -129,7 +127,7 @@ GitHub documentation lists the steps to target Actions against self hosted runne
 There's also has a quick start guide to get started on Actions, For more information, see "[Quick start Guide to GitHub Actions](https://docs.github.com/en/actions/quickstart)."
 
 ## Next steps
-ARC provides several interesting features and capabilities. For more information, see "[readme](https://github.com/actions-runner-controller/actions-runner-controller/blob/master/README.md)."
+ARC provides several interesting features and capabilities. For more information, see "[Readme](https://github.com/actions-runner-controller/actions-runner-controller/blob/master/README.md)."