XEP-0444: Add the XML Schema

It was missing.

xep-0444.xml

@@ -37,6 +37,12 @@
     <email>xsf@larma.de</email>
     <jid>jabber@larma.de</jid>
   </author>
+  <revision>
+    <version>0.1.1</version>
+    <date>2022-12-30</date>
+    <initials>egp</initials>
+    <remark>Add the XML Schema</remark>
+  </revision>
   <revision>
     <version>0.1.0</version>
     <date>2020-10-13</date>
@@ -234,4 +240,27 @@
     </ul>
   </section2>
 </section1>
+<section1 topic='XML Schema' anchor='schema'>
+  <section2 topic='urn:xmpp:reactions:0' anchor='schema-reactions'>
+    <code><![CDATA[
+<?xml version='1.0' encoding='UTF-8'?>
+
+<xs:schema
+    xmlns:xs='http://www.w3.org/2001/XMLSchema'
+    targetNamespace='urn:xmpp:reactions:0'
+    xmlns='urn:xmpp:reactions:0'
+    elementFormDefault='qualified'>
+
+  <xs:element name='reactions'>
+    <xs:complexType>
+      <xs:sequence minOccurs='0' maxOccurs='unbounded'>
+        <xs:element name='reaction' type='xs:string'/>
+      </xs:sequence>
+      <xs:attribute name='id' type='xs:string' use='required'/>
+    </xs:complexType>
+  </xs:element>
+
+</xs:schema>]]></code>
+  </section2>
+</section1>
 </xep>