It is called here documents

doc/ci/yaml/script.md

@@ -164,7 +164,7 @@ Second command line.
 When you omit the `>` or `|` block scalar indicators, GitLab concatenates non-empty
 lines to form the command. Make sure the lines can run when concatenated.
 
-[These documents](https://en.wikipedia.org/wiki/Here_document) work with the
+[Shell here documents](https://en.wikipedia.org/wiki/Here_document) work with the
 `|` and `>` operators as well. The example below transliterates lower case letters
 to upper case: