Fix some typos/misspellings in docs

doc/guide/config.xml

@@ -8,7 +8,7 @@
 
   <para>Depending on configuration backend chosen (see <xref
   linkend="dhcp-config-backend"/>), configuration mechanisms are different. The
-  following sections describe details of the differeent configuration backends. Note
+  following sections describe details of the different configuration backends. Note
   that only one configuration backend can be used and its selection is
   made when the configure script is run.</para>
 

doc/guide/ddns.xml

@@ -213,7 +213,7 @@ corresponding values in the DHCP servers' "dhcp-ddns" configuration section.
         name in that domain's configuration entry.  When D2 matches a
         change request to a domain, it checks whether the domain has
         a TSIG key associated with it.  If so, D2 will use that key to
-        sign DNS update messages sent to and verify repsonses received
+        sign DNS update messages sent to and verify responses received
         from the domain's DNS server(s). For each TSIG key required by
         the DNS servers that D2 will be working with there must be a
         corresponding TSIG key in the TSIG Key list.</para>

doc/guide/dhcp4-srv.xml

@@ -737,7 +737,7 @@ temporarily override a list of interface names and listen on all interfaces.
             <row><entry>record</entry><entry>Structured data that may comprise any types (except "record" and "empty")</entry></row>
             <row><entry>string</entry><entry>Any text</entry></row>
             <row><entry>uint8</entry><entry>8 bit unsigned integer with allowed values 0 to 255</entry></row>
-            <row><entry>uint16</entry><entry>16 bit unsinged integer with allowed values 0 to 65535</entry></row>
+            <row><entry>uint16</entry><entry>16 bit unsigned integer with allowed values 0 to 65535</entry></row>
             <row><entry>uint32</entry><entry>32 bit unsigned integer with allowed values 0 to 4294967295</entry></row>
           </tbody>
           </tgroup>
@@ -1412,7 +1412,7 @@ temporarily override a list of interface names and listen on all interfaces.
       <listitem><para>
       If the REQUEST contains the client FQDN option, the candidate
       name is taken from there, otherwise it is taken from the Host Name option.
-      The candiate name may then be modified:
+      The candidate name may then be modified:
       <orderedlist>
       <listitem><para>
       If the candidate name is a fully qualified domain name, use it.

doc/guide/dhcp6-srv.xml

@@ -984,7 +984,7 @@ should include options from the isc option space:
     <section id="dhcp6-subnet-class">
       <title>Limiting access to IPv6 subnet to certain classes</title>
       <para>
-        In certain cases it beneficial to restrict access to certains subnets
+        In certain cases it beneficial to restrict access to certain subnets
         only to clients that belong to a given subnet. For details on client
         classes, see <xref linkend="dhcp6-client-classifier"/>. This is an
         extension of a previous example from <xref linkend="dhcp6-address-config"/>.

doc/guide/intro.xml

@@ -114,9 +114,9 @@
 
         <listitem>
             <simpara>
-	In order to store lease information in a PostgresSQL database, Kea requires PostgresSQL
+	In order to store lease information in a PostgreSQL database, Kea requires PostgreSQL
     headers and libraries.  This is an optional dependency in that Kea can be
-    built without PostgresSQL support.
+    built without PostgreSQL support.
             </simpara>
         </listitem>
       </itemizedlist>

doc/guide/keactrl.xml

@@ -168,7 +168,7 @@ INFO/keactrl: Starting kea-dhcp-ddns -c /usr/local/etc/kea/kea.conf
 INFO/keactrl: Skip sending signal 15 to process kea-dhcp6: process is not running
 </screen>
       Note that the <command>stop</command> will attempt to stop all servers
-      regrdless of whether they are "enabled" in the <filename>keactrl.conf</filename>.
+      regardless of whether they are "enabled" in the <filename>keactrl.conf</filename>.
       If any of the servers is not running, an informational message
       is displayed as in the <command>stop</command> command output above.
       </para>