changed ben to been

docs/reference/migration/migrate_2_0/mapping.asciidoc

@@ -377,7 +377,7 @@ The ability to specify mappings in configuration files has been removed. To
 specify default mappings that apply to multiple indexes, use
 <<indices-templates,index templates>> instead.
 
-Along with this change, the following settings have ben removed:
+Along with this change, the following settings have been removed:
 
 * `index.mapper.default_mapping_location`
 * `index.mapper.default_percolator_mapping_location`