Fixed wording, style, grammar

According to doc review and style guide policies, fixed several issues
with format, grammar, wording, style.

Author: chabowski

adoc/SAP-EIC-PostgreSQL.adoc

@@ -5,31 +5,31 @@
 
 IMPORTANT::
 SUSE does *not* offer database support for {pg} on Kubernetes.
-To get support, go to link:https://www.postgresql.org/support/[The PostgreSQL Global Development Group].
+Find information about support options at link:https://www.postgresql.org/support/[The PostgreSQL Global Development Group].
 
 
 IMPORTANT::
 The instructions below describe only one variant of installing {pg}.
 There are other possible ways to set up {pg} which are not covered in this guide. 
 It is also possible to install {pg} as a single instance on the operating system.
-We will focus on installing {pg} in a Kubernetes cluster as we also need a {redis} database and we will clustering that together.
+We will focus on installing {pg} in a Kubernetes cluster, as we also need a {redis} database, and we will clustering that together.
 
 == Deploying {pg}
 Even though {pg} is available for deployment using the {rancher} Apps, we recommend to use the {rac}.
 The {pg} chart can be found at https://apps.rancher.io/applications/postgresql.
 
-== Creating Secret for {rac}
+== Creating secret for {rac}
 First, create a namespace and the *imagePullSecret* for installing the {pg} database onto the cluster.
 [source, bash, subs="attributes"]
 ----
 $ kubectl create namespace {pg_app_name}
 ----
 
 [#pgIPS]
-How to create the *imagePullSecret* is described in the Section <<imagePullSecret>>.
+How to create the *imagePullSecret* is described in <<imagePullSecret>>.
 
-=== Create Secret with certificates
-Second, create the Kubernetes secret with the certificates. You will find an example how to do this in the <<selfSignedCertificates>>.
+=== Creating secret with certificates
+Second, create the Kubernetes secret with the certificates. You will find an example how to do this in <<selfSignedCertificates>>.
 
 === Installing the application
 [#pgLIR]