[master] Removed spurious dot in title of Quick Start section.

Trivial change, agreed on jabber.

doc/guide/quickstart.xml

@@ -14,7 +14,7 @@
     </para>
 
     <section id="quick-start">
-      <title>Quick start guide for DHCPv4 and DHCPv6 services.</title>
+      <title>Quick start guide for DHCPv4 and DHCPv6 services</title>
 
       <orderedlist>