- Fix typo: They enabled -> they are enabled.

- Add a missing space in a `boot kernel.old' example.

PR:		docs/34587
Submitted by:	Martin Heinen <martin@sumuk.de>

en_US.ISO8859-1/books/handbook/kernelconfig/chapter.sgml

@@ -616,7 +616,7 @@ options          FFS_ROOT     #FFS usable as root device [keep this!]</programli
     <programlisting>options          SOFTUPDATES  #Enable FFS soft updates support</programlisting>
 
     <para>This option enables soft updates in the kernel, this will help speed
-      up write access on the disks.  They enabled by default in the 4.X branch
+      up write access on the disks.  They are enabled by default in the 4.X branch
       but may not be turned on.  Review the output from &man.mount.8; to see
       if you have them enabled.  If you do not see the soft-updates option then
       you will need to activate it using the &man.tunefs.8; or &man.newfs.8;
@@ -1318,7 +1318,7 @@ pseudo-device   bpf           # Berkeley packet filter</programlisting>
 	    counts down from 10.  Hit any key except for the
             <keycap>enter</keycap> key, type <command>unload</command>
             and then type
-	    <command>boot<replaceable>kernel.old</replaceable></command>,
+	    <command>boot <replaceable>kernel.old</replaceable></command>,
             or the filename of any other kernel that will boot properly.
             When reconfiguring a kernel, it is always a good idea to keep
             a kernel that is known to work on hand.</para>