[Solr Wiki] Trivial Update of "DataImportHandler" by ShalinMangar

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The following page has been changed by ShalinMangar:
http://wiki.apache.org/solr/DataImportHandler

The comment on the change is:
Put xpath explanation in brackets

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  The entity fields can have the following attributes (over and above the default attributes):
-  * '''`xpath`''' (optional) : The xpath expression of the field to be mapped as a column in the record . It can be omitted if the column does not come from an xml attribute is a synthetic field created by a transformer. If a field is marked as multivalued in the schema and in a given row of the xpath finds multiple values it is handled automatically by the X!PathEntityProcessor. No extra configuration is required
+  * '''`xpath`''' (optional) : The xpath expression of the field to be mapped as a column in the record . It can be omitted if the column does not come from an xml attribute (is a synthetic field created by a transformer). If a field is marked as multivalued in the schema and in a given row of the xpath finds multiple values it is handled automatically by the X!PathEntityProcessor. No extra configuration is required
  
   * '''`commonField`''' : can be (true| false) . If true, this field once encountered in a record will be copied to other records before creating a Solr document