Update README.md

README.md

@@ -578,10 +578,10 @@ The corpus contains the following information for each text sample:
 * `id`: an identifier that is unique among the source.
 * `language`: the language of the text sample (relying on the source, that information can be wrong).
   <details ><summary>Possible values:</summary>
-* an ISO 639-1 code of a natural language: `en`, `fr`, `de`, `es`, or `it`;
-* a common name prefixed by "`code:`" of a programming language:  `code:python`, `code:c++`, …; or
-* a list of ISO 639-1 codes separated by commas, if the text sample is multilingual: `fr,en`, `de,fr`, `es,en`, `it,en`,
-  or one of those pairs in the opposite order if the languages appear in the opposite order in the text.
+(1) an ISO 639-1 code of a natural language (`en`, `fr`, `de`, `es`, or `it`),
+(2) a common name prefixed by "`code:`" of a programming language (`code:python`, `code:c++`, …) or
+(3) a list of ISO 639-1 codes separated by commas, if the text sample is multilingual (`fr,en`, `de,fr`, `es,en`, `it,en`,
+  or one of those pairs in the opposite order if the languages appear in the opposite order in the text).
   </details > 
 * `url` (optional): the URL of the original text sample on the web, if available.
 * `title` (optional): the title of the original text sample, if available.