Cleanup some textproc/igor warnings.

Event:	    vBSDcon FreeBSD Hackathon

en_US.ISO8859-1/articles/committers-guide/article.xml

@@ -93,7 +93,8 @@
 
 	  <row>
 	    <entry><emphasis>SMTP Host</emphasis></entry>
-	    <entry><literal><systemitem
+	    <entry>
+	      <literal><systemitem
 		class="fqdomainname">smtp.FreeBSD.org</systemitem>:587</literal>
 	      (see also <xref linkend="smtp-setup"/>).</entry>
 	  </row>
@@ -218,7 +219,8 @@
 
       <para>Existing keys can be used, but should be checked with
 	<filename>doc/head/share/pgpkeys/checkkey.sh</filename>
-	first.  In this case, make sure the key has a &os; user ID.</para>
+	first.  In this case, make sure the key has a &os; user
+	ID.</para>
 
       <para>For those who do not yet have an
 	Open<acronym>PGP</acronym> key, or need a new key to meet &os;
@@ -2244,8 +2246,8 @@ freebsd-mfc-after = 2 weeks</programlisting>
 	    or save it elsewhere.</para>
 
 	  <note>
-	    <para>If your e-mail system uses SPF with strict rules, you
+	    <para>If your e-mail system uses SPF with strict rules,
-	      should whitelist <systemitem
+	      you should whitelist <systemitem
 		class="fqdomainname">mx2.FreeBSD.org</systemitem> from
 	      SPF checks.</para>
 	  </note>
@@ -2280,9 +2282,9 @@ freebsd-mfc-after = 2 weeks</programlisting>
 
 	<procedure>
 	  <step>
-	    <para>Point your mail client at <literal><systemitem
+	    <para>Point your mail client at
-	        class="fqdomainname">smtp.FreeBSD.org</systemitem>:587</literal>.</para>
+	      <literal><systemitem
-	  </step>
+		class="fqdomainname">smtp.FreeBSD.org</systemitem>:587</literal>.</para></step>
 
 	  <step>
 	    <para>Enable STARTTLS.</para>
@@ -2310,7 +2312,7 @@ freebsd-mfc-after = 2 weeks</programlisting>
 	</procedure>
 
 	<note>
-	  <title>Additional notes</title>
+	  <title>Additional Notes</title>
 
 	  <itemizedlist>
 	    <listitem>
@@ -2323,8 +2325,7 @@ freebsd-mfc-after = 2 weeks</programlisting>
 	    <listitem>
 	      <para>A header will be appended with the SASL username:
 		(<literal>Authenticated sender:
-		 <replaceable>username</replaceable></literal>).</para>
+		<replaceable>username</replaceable></literal>).</para></listitem>
-	    </listitem>
 
 	    <listitem>
 	      <para>Host has various rate limits in place to cut down
@@ -2668,6 +2669,20 @@ smtpd_sender_restrictions = reject_known_sender_login_mismatch</programlisting>
 	      include a VuXML URL or a CVE ID.</entry>
 	  </row>
 
+	  <row>
+	    <entry><literal>Event:</literal></entry>
+	    <entry>The description for the event where this commit was
+	      made.  If this is a recurring event, add the year or
+	      even the month to it.  For example, this could be
+	      <literal>FooBSDcon 2019</literal>.  The idea behind this
+	      line is to put recognition to conferences, gatherings,
+	      and other types of meetups and to show that these are
+	      useful to have.  Please do not use the
+	      <literal>Sponsored by:</literal> line for this as that
+	      is meant for organizations sponsoring certain features
+	      or developers working on them.</entry>
+	  </row>
+
 	  <row>
 	    <entry><literal>Differential Revision:</literal></entry>
 	    <entry>The full URL of the Phabricator review.  This line
@@ -3704,9 +3719,6 @@ Relnotes:           yes</programlisting>
 	<listitem>
 	  <para>Test your changes before committing them.</para>
 
-	  <!-- XXX Needs update re sparc64 + pc98
-	    Also, needs more details on which machines are available for testing
-	  -->
 	  <para>This may sound obvious, but if it really were so
 	    obvious then we probably would not see so many cases of
 	    people clearly not doing this.  If your changes are to the
@@ -4103,9 +4115,7 @@ Relnotes:           yes</programlisting>
 	integrated into the &os; documentation.</para>
 
       <para>Current Tier 2 platforms are &arch.arm;, &arch.arm64;,
-	&arch.ia64; (through &os; 10), &arch.mips;,
+	&arch.mips;, &arch.powerpc;, and &arch.sparc64;.</para>
-	&arch.pc98; (through &os; 11),
-	&arch.powerpc;, and &arch.sparc64;.</para>
     </sect2>
 
     <sect2>
@@ -4146,9 +4156,7 @@ Relnotes:           yes</programlisting>
 	project.</para>
 
       <para>All systems not otherwise classified into a support tier
-	are Tier 4 systems.  The &arch.ia64; platform is transitioning
+	are Tier 4 systems.</para>
-	to Tier 4 status in &os; 11.  The &arch.pc98; platform is
-	transitioning to Tier 4 status in &os; 12.</para>
     </sect2>
 
     <sect2>