Improve clarity of doc comment

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: henrymercer

src/environment.ts

@@ -18,10 +18,9 @@ export enum EnvVar {
   CLI_VERBOSITY = "CODEQL_VERBOSITY",
 
   /**
-   * The serialized `VersionInfo` of the CodeQL CLI, persisted so that later
+   * The serialized `{ cmd, version }` information about the CodeQL CLI, persisted so that later
    * Actions steps can reuse it instead of invoking `codeql version` again.
    */
-  CODEQL_VERSION_INFO = "CODEQL_ACTION_CLI_VERSION_INFO",
 
   /** Whether the CodeQL Action has invoked the Go autobuilder. */
   DID_AUTOBUILD_GOLANG = "CODEQL_ACTION_DID_AUTOBUILD_GOLANG",