upgrade doxia version and move it to property

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@769551 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index c668088..ab9396f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -129,6 +129,7 @@
 
   <properties>
     <maven-scm.version>1.2</maven-scm.version>
+    <doxiaVersion>1.0</doxiaVersion>
   </properties>
 
   <dependencies>
@@ -160,7 +161,7 @@
     <dependency>
       <groupId>org.apache.maven.doxia</groupId>
       <artifactId>doxia-sink-api</artifactId>
-      <version>1.0-alpha-11</version>
+      <version>${doxiaVersion}</version>
     </dependency>
     <dependency>
       <groupId>org.apache.maven</groupId>