Punctuation fix

Co-authored-by: Daria Vladykina <[email protected]>

xml/ha_config_cli.xml

@@ -167,7 +167,7 @@ crm cluster join --use-ssh-agent -c <replaceable>USER@NODE1</replaceable></comma
       If you set up the cluster with &yast; instead of using the bootstrap scripts, the SSH keys
       are not automatically generated. To configure SSH keys with SSH agent forwarding enabled,
       you can use the <literal>ssh</literal> stage of the bootstrap scripts on its own. Run these
-      commands after configuring the cluster in &yast;, but before bringing the cluster online:
+      commands after configuring the cluster in &yast;, but before bringing the cluster online.
     </para>
     <para>
       Run the following command on the first node: