fixed about_transform_help text

Signed-off-by: Srthkdb <[email protected]>

Author: srthkdb

tests/testdata/test_cmd/help/about_transform_config_help.txt

@@ -1,3 +1,4 @@
+
 A transform configuration file is used to describe which transformations and
 validations to apply to a source CSV file. This is a simple text file using YAML
 format, using the same format as an .ABOUT file.
@@ -41,4 +42,5 @@ For instance with this configuration the target CSV/JSON will only contains the
 and "version" fields and no other field:
     field_filters:
         - name
-        - version
+        - version
+