Fix typos.

svn path=/head/; revision=45264

en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml

@@ -3548,7 +3548,7 @@ OPT6_DESC=	Describe OPT6</programlisting>
 	<para><filename>ports/Mk/bsd.options.desc.mk</filename>
 	    has descriptions for many common
 	    <varname>OPTIONS</varname>.  While often useful, they
-	    should be overriden if the description is insufficient
+	    should be overridden if the description is insufficient
 	    for the port.</para>
 
 	<tip>

en_US.ISO8859-1/books/porters-handbook/plist/chapter.xml

@@ -209,7 +209,7 @@ lib/X11/oneko/sounds/cat.au
 	of <filename>${PREFIX}/etc</filename>, it should be in
 	<varname>ETCDIR</varname>, which defaults to
 	<literal>${PREFIX}/etc/${PORTNAME}</literal>, it can be
-	overrided in the ports <filename>Makefile</filename> if there
+	overridden in the ports <filename>Makefile</filename> if there
 	is a convention for the port to use some other directory.  The
 	<literal>%%ETCDIR%%</literal> macro should be used in its
 	stead in the <filename>pkg-plist</filename> file.</para>

en_US.ISO8859-1/books/porters-handbook/special/chapter.xml

@@ -53,7 +53,7 @@
       but only depend on other ports, should avoid needlessly
       extracting the &man.mtree.8; to the stage directory.  This is
       the basic directory layout of the package, and these empty
-      directories will be seens as orphans.  To prevent
+      directories will be seen as orphans.  To prevent
       &man.mtree.8; extraction, add this line:</para>
 
     <programlisting>NO_MTREE=	yes</programlisting>