make sure the two name fields are distinct

Author: wysiwys

README.md

@@ -7,15 +7,15 @@ Currently supported sources:
  - `criterion`
 
 ## Fields
-- `name` (required): name of the benchmark. This can optionally be specified with a given metadata format (see below)
+- `name` (required): name of the benchmark
 - `tool` (required): tool used to get benchmark output. One of `["cargo"]`
 - `os` (required): a string describing the os
 - `output-file-path` (required): a path to a file containing the output of the benchmark tool
 - `data-out-path` (required): the path where the output of the action should be written
 
 ## Metadata format
 
-The `name` field can be provided as a `/`-separated string with the format `category/key size/name/platform/api`. The key size should be an integer. Some fields in this string can be left blank. Any unspecified or invalid fields will be parsed to `undefined`.
+The benchmark name in the `cargo` benchmarks can be provided as a `/`-separated string with the format `category/key size/name/platform/api`. The key size should be an integer. Some fields in this string can be left blank. Any unspecified or invalid fields will be parsed to `undefined`.
 
 ## Output data format