API: Make ns.spawn return never instead of void (#2798)

markdown/bitburner.ns.spawn.md

@@ -9,7 +9,7 @@ Terminate current script and start another in a defined number of milliseconds.
 **Signature:**
 
 ```typescript
-spawn(script: string, threadOrOptions?: number | SpawnOptions, ...args: ScriptArg[]): void;
+spawn(script: string, threadOrOptions?: number | SpawnOptions, ...args: ScriptArg[]): never;
 ```
 
 ## Parameters
@@ -82,7 +82,7 @@ Additional arguments to pass into the new script that is being run.
 
 **Returns:**
 
-void
+never
 
 ## Remarks
 

src/ScriptEditor/NetscriptDefinitions.d.ts

@@ -7950,7 +7950,7 @@ export interface NS {
    * @param threadOrOptions - Either an integer number of threads for new script, or a {@link SpawnOptions} object. Threads defaults to 1 and spawnDelay defaults to 10,000 ms.
    * @param args - Additional arguments to pass into the new script that is being run.
    */
-  spawn(script: string, threadOrOptions?: number | SpawnOptions, ...args: ScriptArg[]): void;
+  spawn(script: string, threadOrOptions?: number | SpawnOptions, ...args: ScriptArg[]): never;
 
   /**
    * Returns the currently running script.