Miscellaneous fixes from danfe@.

Submitted by:	Alexey Dokuchaev <danfe@FreeBSD.org>

en_US.ISO8859-1/books/porters-handbook/book.xml

@@ -201,7 +201,7 @@ COMMENT=	Cat chasing a mouse all over the screen
 	    <filename>README</filename> or manpage</emphasis>; too
 	    often they are not a concise description of the port or
 	    are in an awkward format (e.g., manpages have justified
-	    spacing, as it looks particularly bad with monospaced
+	    spacing, which looks particularly bad with monospaced
 	    fonts).</para>
 	</note>
 
@@ -511,7 +511,7 @@ PLIST_DIRS=	lib/X11/oneko</programlisting>
   <chapter xml:id="slow">
     <title>Slow Porting</title>
 
-    <para>Ok, so it was not that simple, and the port required some
+    <para>Okay, so it was not that simple, and the port required some
       modifications to get it to work.  In this section, we will
       explain, step by step, how to modify it to get it to work with
       the ports paradigm.</para>
@@ -4109,7 +4109,7 @@ LIB_DEPENDS=	libbar.so:${PORTSDIR}/foo/bar
 
 	<para>Available <varname>USE_</varname> and
 	  <varname>WANT_</varname> variables are defined in the files
-	  in <filename>/usr/ports/Mk</filename>.</para>
+	  in <filename class="directory">/usr/ports/Mk</filename>.</para>
       </sect2>
     </sect1>
 
@@ -12732,7 +12732,7 @@ pre-install:
     <sect1 xml:id="uses-values">
       <title>Values of <varname>USES</varname></title>
 
-      <table frame="none">
+      <table>
 	<title>Values of <varname>USES</varname></title>
 
 	<tgroup cols="3">