Updated committer/contributor list. (alejandro)

docs/pom.xml

@@ -364,7 +364,7 @@
             <email>jluniya@apache.org</email>
             <timezone>-8</timezone>
             <roles>
-                <role>Committer</role>
+                <role>PMC</role>
             </roles>
             <organization>
                 Hortonworks