docs: improve ducument structure

docs/admin-guide.rst

@@ -0,0 +1,8 @@
+Admin Guide
+===========
+
+The administration guide.
+
+
+.. include:: command-line-tools.rst
+	

docs/command-line-tools.rst

@@ -1,5 +1,5 @@
 Command Line Tools
-==================
+------------------
 
 ``proxmox-backup-client``
 ^^^^^^^^^^^^^^^^^^^^^^^^^

docs/deployment-guide.rst

@@ -0,0 +1,5 @@
+Deployment Guide
+================
+
+The deployment guide.
+

docs/index.rst

@@ -10,10 +10,11 @@ Welcome to Proxmox Backup's documentation!
    :maxdepth: 3
    :caption: Table of Contents
 
-   section1.rst
-   section2.rst
-   command-line-tools.rst
-
+   introduction.rst
+   installation.rst
+   deployment-guide.rst
+   admin-guide.rst
+ 
 .. raw:: latex
 
    \appendix

docs/installation.rst

@@ -1,5 +1,5 @@
-A test
-======
+Installation
+============
 
 sdfsd dfgfd dgd
 

docs/introduction.rst

@@ -0,0 +1,15 @@
+Introduction
+============
+
+this is a test
+
+Why Backup?
+-----------
+
+dfgfd fghfgh fh
+
+
+History
+-------
+
+history ...

docs/section1.rst

@@ -1,10 +0,0 @@
-This is Section1
-----------------
-
-this is a test
-
-Sub header
-^^^^^^^^^^
-
-dfgfd fghfgh fh
-