Update src/site/apt/index.apt

Co-authored-by: Oliver B. Fischer <o.b.fischer@swe-blog.net>

src/site/apt/index.apt

@@ -72,7 +72,7 @@ Versions Maven Plugin
 
   * {{{./set-mojo.html}versions:set}} can be used to set the project version from the command line.
 
-  * {{{./set-property-mojo.html}versions:set-property}} can be used to set properties to a given version from the command line.
+  * {{{./set-property-mojo.html}versions:set-property}} can be used to set one or multiple properties to a given version from the command line.
 
   * {{{./use-releases-mojo.html}versions:use-releases}} searches the pom for all -SNAPSHOT versions which have been
   released and replaces them with the corresponding release version. 
@@ -164,4 +164,3 @@ Versions Maven Plugin
   * {{{./examples/use-releases.html}Replacing -SNAPSHOT versions with their corresponding releases}}
 
   * {{{./examples/set.html}Changing the project version}}
-