- remove deprecated gnats from pr-guidelines article

PR:		194787
Differential Revision:	https://reviews.freebsd.org/D1121
Reported by:	emaste
Approved by:	remko (mentor)

en_US.ISO8859-1/articles/pr-guidelines/article.xml

@@ -207,7 +207,7 @@
     <title>Types of Problem Reports</title>
 
     <para>While handling problem reports, either as a developer who has
-      direct access to the GNATS database or as a contributor who
+      direct access to the Problem Reports database or as a contributor who
       browses the database and submits followups with patches, comments,
       suggestions or change requests, you will come across several
       different types of PRs.</para>
@@ -282,7 +282,7 @@
 
 	    <row>
 	      <entry>&os; web pages (not including docs)</entry>
-	      <entry>www</entry>
+	      <entry>Website</entry>
 	      <entry>freebsd-www</entry>
 	    </row>
 	  </tbody>
@@ -719,15 +719,15 @@
 
 	  <tbody>
 	    <row>
-	      <entry>problem with GNATS itself (&man.send-pr.1;)</entry>
+	      <entry>problem with PR database</entry>
 	      <entry>bin</entry>
 	      <entry>bugmeister</entry>
 	      <entry>alias</entry>
 	    </row>
 
 	    <row>
-	      <entry>problem with GNATS web form</entry>
+	      <entry>problem with Bugzilla <link xlink:href="https://bugs.freebsd.org/submit/">web form</link>.</entry>
-	      <entry>www</entry>
+	      <entry>doc</entry>
 	      <entry>bugmeister</entry>
 	      <entry>alias</entry>
 	    </row>