Apply suggestions from code review

Replace COBOL with Go

Co-Authored-By: James Fletcher <42464962+jf205@users.noreply.github.com>

docs/language/learn-ql/writing-queries/introduction-to-queries.rst

@@ -78,6 +78,7 @@ When writing your own alert queries, you would typically import the standard lib
 
 - C/C++: ``cpp``
 - C#: ``csharp``
+- Go: ``go``
 - Java: ``java``
 - JavaScript/TypeScript: ``javascript``
 - Python: ``python``
@@ -139,4 +140,4 @@ What next?
 - To learn more about writing path queries, see :doc:`Constructing path queries <path-queries>`.
 - Take a look at the `built-in queries <https://help.semmle.com/wiki/display/QL/Built-in+queries>`__ to see examples of the queries included in CodeQL.
 - Explore the `query cookbooks <https://help.semmle.com/wiki/display/QL/QL+cookbooks>`__ to see how to access the basic language elements contained in the CodeQL libraries.
-- For a full list of resources to help you learn CodeQL, including beginner tutorials and language-specific examples, visit `Learning CodeQL <https://help.semmle.com/QL/learn-ql/>`__.
+- For a full list of resources to help you learn CodeQL, including beginner tutorials and language-specific examples, visit `Learning CodeQL <https://help.semmle.com/QL/learn-ql/>`__.

docs/query-metadata-style-guide.md

@@ -71,6 +71,7 @@ You must specify an `@id` property for your query. It must be unique and should
 
 *   C and C++: `cpp`
 *   C#: `cs`
+*   Go: `go`
 *   Java: `java`
 *   JavaScript and TypeScript: `js`
 *   Python: `py`