fix typo

Signed-off-by: olivier lamy <olamy@apache.org>
diff --git a/pom.xml b/pom.xml
index 7ef6180..c9ac14d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -734,7 +734,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-shade-plugin</artifactId>
-          <version>3.2.1.</version>
+          <version>3.2.1</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>