Update information on support

Author: felicitymay

docs/language/support/language-support.rst

@@ -6,8 +6,6 @@ CodeQL and LGTM version |version| support analysis of the following languages co
 
 Note that where there are several versions or dialects of a language, the supported variants are listed.
 If your code requires a particular version of a compiler, check that this version is included below. 
-Customers with any questions should contact their usual Semmle contact with any questions. 
-If you're not a customer yet, contact us at [email protected] 
-with any questions you have about language and compiler support.
+If you have any questions about language and compiler support, you can find help on the `GitHub Security Lab discussions board <https://github.com/github/securitylab/discussions>`__.
 
 .. include:: reusables/versions-compilers.rst