Fixing style, format, grammar

According to doc review and style guide, fixed style, format and grammar
issues.

Author: chabowski

adoc/SAPDI3-Rancher.adoc

@@ -25,9 +25,6 @@ tls-san:
 EOF
 ----
 
-++++
-<?pdfpagebreak?>
-++++
 
 Create configuration files for additional cluster nodes:
 [source, bash]
@@ -70,9 +67,6 @@ $ export PATH=$PATH:/var/lib/rancher/rke2/bin/
 $ export KUBECONFIG=/etc/rancher/rke2/rke2.yaml
 ----
 
-++++
-<?pdfpagebreak?>
-++++
 
 # end::rancher-rke2-install[]