Update gts-headers-in-wis2.rst

docs/source/user/gts-headers-in-wis2.rst

@@ -12,7 +12,7 @@
 
 To enable the WIS2 to GTS Gateway to correctly identify the data to be republished on the GTS, you need to include the GTS property in the WIS2 Notification Message as follows:
 
 .. code-block:: json
 
    "properties": {
      "gts": {
@@ -21,7 +21,7 @@
      }
    }
 
-wis2box can add these to WIS2 Notifications automatically, provided you specify the additional file `gts_headers_mappings.json` that contains the required information to map the GTS headers to the incoming filenames.
+wis2box can add these to WIS2 Notifications automatically, provided you specify the additional file `gts_headers_mappings.csv` that contains the required information to map the GTS headers to the incoming filenames.
 
 Note that this is optional and only required if you want to turn off the existing system responsible for sending data to the GTS during the transition period.
 
@@ -36,7 +36,7 @@
 
 Example content for `gts_headers_mapping.csv`:
 
 .. code-block:: csv
 
    string_in_filepath,TTAAii,CCCC
    ISMD01LIIB,ISMD01,LIBB
@@ -45,7 +45,7 @@
 In this example, whenever `ISMD01LIIB` or `ISMD02LIIB` is contained in the filepath of the incoming file,
 the corresponding GTS headers will be added to the WIS2 Notification Message as a dictionary in the `properties` field:
 
 .. code-block:: json
 
    "properties": {
      "gts": {