Add missing freebsd-git mailing list to the handbook

PR:		190628
Submitted by:	david@catwhisker.org (original patch)
Approved by:	eadler (mentor)

en_US.ISO8859-1/books/handbook/eresources/chapter.xml

@@ -320,6 +320,11 @@
 		implementations</entry>
 	    </row>
 
+	    <row>
+	      <entry>&a.git.name;</entry>
+	      <entry>Discussion of git use in the &os; project</entry>
+	    </row>
+
 	    <row>
 	      <entry>&a.gnome.name;</entry>
 	      <entry>Porting <application>GNOME</application> and
@@ -1362,6 +1367,22 @@
 	  </listitem>
 	</varlistentry>
 
+	<varlistentry>
+	  <term>&a.git.name;</term>
+
+	  <listitem>
+	    <para><emphasis>Use of git in the &os;
+		project</emphasis></para>
+
+	    <para>Discussions of how to use git in &os;
+	      infrastructure including the github mirror and other
+	      uses of git for project collaboration.  Discussion area
+	      for people using git against the &os; github mirror.
+	      People wanting to get started with the mirror or git
+	      in general on &os; can ask here.</para>
+	  </listitem>
+	</varlistentry>
+
 	<varlistentry>
 	  <term>&a.gnome.name;</term>