Removed outdated bit in rss docs

docs/content/documentation/templates/rss.md

@@ -7,8 +7,6 @@ If the site `config.toml` file sets `generate_rss = true`, then Gutenberg will
 generate an `rss.xml` page for the site, which will live at `base_url/rss.xml`. To
 generate the `rss.xml` page, Gutenberg will look for a `rss.xml` file in the `templates`
 directory or, if one does not exist, will use the use the built-in rss template.
-Currently it is only possible to have one RSS feed for the whole site; you cannot
-create a RSS feed per section or taxonomy.
 
 **Only pages with a date and that are not draft will be available.**