Improve warning when using autobuild with multi-language builds

Author: henrymercer

lib/autobuild.js

@@ -85,7 +85,11 @@ export async function determineAutobuildLanguages(
         " and "
       )} code. If you wish to scan ${autobuildLanguagesWithoutGo
         .slice(1)
-        .join(" and ")}, you must replace this call with custom build steps.`
+        .join(
+          " and "
+        )}, you must replace the autobuild step of your workflow with custom build steps. ` +
+        "For more information, see " +
+        "https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language"
     );
   }