Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit 63dcf57ab378933438a5945875afb09ae9d99c92.
diff --git a/asterix-doc/pom.xml b/asterix-doc/pom.xml
index 8f8ef5b..8a98c12 100644
--- a/asterix-doc/pom.xml
+++ b/asterix-doc/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>asterix</artifactId>
     <groupId>org.apache.asterix</groupId>
-    <version>0.8.8-SNAPSHOT</version>
+    <version>0.8.7-incubating</version>
   </parent>
 
   <url>http://asterixdb.incubator.apache.org/</url>