Fix typo

Author: michael-o

pom.xml

@@ -228,7 +228,7 @@ under the License.
     <dependency>
       <groupId>org.apache.maven.shared</groupId>
       <artifactId>maven-common-artifact-filters</artifactId>
-      <!-- Do not upgrades, leads to IT failures, needs analysis -->
+      <!-- Do not upgrade, leads to IT failures, needs analysis -->
       <version>3.4.0</version>
     </dependency>
     <!-- Doxia -->