[Doc]: PGPRO-632, update start.sgml

Author: dmpgpro

doc/src/sgml/start.sgml

@@ -17,20 +17,10 @@
     how to access <productname>&productname;</productname>.
    </para>
 
-   <para>
-    If you are not sure whether <productname>&productname;</productname>
-    is already available or whether you can use it for your
-    experimentation then you can install it yourself.  Doing so is not
-    hard and it can be a good exercise.
-    <productname>&productname;</productname> can be installed by any
-    unprivileged user; no superuser (<systemitem>root</systemitem>)
-    access is required.
-   </para>
-
    <para>
     If you are installing <productname>&productname;</productname>
     yourself, then see
-    instructions on installation, and return to
+    instructions on installation <xref linkend="installation-bin">, and return to
     this guide when the installation is complete.  Be sure to follow
     closely the section about setting up the appropriate environment
     variables.