Merge pull request #971 from grails/groovyChangeDescription

Update description of groovy change

Author: jdaugherty

grails-database-migration/src/main/groovy/org/grails/plugins/databasemigration/liquibase/GroovyChange.groovy

@@ -51,7 +51,7 @@ import static org.grails.plugins.databasemigration.PluginConstants.DATA_SOURCE_N
  * @author Kazuki YAMAMOTO
  */
 @CompileStatic
-@DatabaseChange(name = "grailsChange", description = "Adds creates a primary key out of an existing column or set of columns.", priority = ChangeMetaData.PRIORITY_DEFAULT)
+@DatabaseChange(name = "grailsChange", description = "Executes groovy code to apply a database change.", priority = ChangeMetaData.PRIORITY_DEFAULT)
 class GroovyChange extends AbstractChange {
 
     ApplicationContext ctx