fix json syntax mistake that thankfully does not seem to bother the c…

…mor module at all

fre/tests/test_files/CMOR_input_example.json

@@ -70,5 +70,5 @@
 
     "#output_path_template":   "Template for output path directory using tables keys or global attributes, these should follow the relevant data reference syntax",
     "output_path_template":    "<mip_era><activity_id><institution_id><source_id><experiment_id><_member_id><table><variable_id><grid_label><version>",
-    "output_file_template":    "<variable_id><table><source_id><experiment_id><_member_id><grid_label>",
+    "output_file_template":    "<variable_id><table><source_id><experiment_id><_member_id><grid_label>"
 }