Update installation.rst

doc/installation.rst

@@ -2,7 +2,7 @@
 Install / Upgrade Ralph
 =======================
 
-Prebuilt docker image - recommeneded option
+Prebuilt docker image - recommended option
 ===========================================
 
 It is the easiest way to try out Ralph using pre-built docker image with the worker, database, and server all together.
@@ -69,15 +69,16 @@ Update the settings
 
 Some new features added to Ralph may require additional settings to work
 properly. In order to enable them in your settings, follow the instructions in
-the :doc:`change log <changes>` for the version you installed.
+the :doc:`change log <changes>` for the version you've installed.
 
 Example data
 ------------
 
-You might want to start with some example data to quickly learn how Ralph works. You will get some networks, racks, assets, devices to start.
-We recommend to this in new installations.
+Docker image has example data installated. But in other installation methods you might also want to have it. 
+By using examples you will quickly understand how Ralph works. You will get some networks, racks, assets, devices to start.
+We strongly recommend to do this.
 
-To generate all examples just run ``ralph make_demo_data``
+To generate all the examples just run ``ralph make_demo_data``.
 
 You can also choose some preffered options:
   * ``--flush`` - clear the database before adding fixtures,
@@ -105,9 +106,9 @@ Installing Ralph - advanced installation
 Introduction
 ------------
 
-To better understand how to build and configure Ralph, just take a look at .. _RalphDocker: https://github.com/allegro/ralph-docker. 
-`init.sh` file handles all db related tasks. Then, you can use supervisord to run discovery queues and other daemons .. _Supervisord: https://github.com/allegro/ralph-docker/blob/master/os/supervisord.conf
-`Dockerfile` gathers all up together.
+To better understand how to build and configure Ralph, just take a look at  https://github.com/allegro/ralph-docker. 
+`init.sh` file handles all db related tasks. Here https://github.com/allegro/ralph-docker/blob/master/os/supervisord.conf
+you will find how to run all required services. `Dockerfile` gathers all up. There are also other files which generate some demo data.
 
 
 Installing Python