Cover type alias doc comments in ts2swift snapshots

Author: kateinoigakukun

Plugins/BridgeJS/Sources/TS2Swift/JavaScript/test/__snapshots__/ts2swift.test.js.snap

@@ -437,7 +437,9 @@ exports[`ts2swift > snapshots Swift output for TypeAliasObject.d.ts > TypeAliasO
 
 @JSFunction func console() throws(JSException) -> Console
 
+/// Console from the environment.
 @JSClass struct Console {
+    /// Log a message.
     @JSFunction func log(_ message: String) throws(JSException) -> Void
 }
 "

Plugins/BridgeJS/Sources/TS2Swift/JavaScript/test/fixtures/TypeAliasObject.d.ts

@@ -1,4 +1,10 @@
+/**
+ * Console from the environment.
+ */
 export type Console = {
+    /**
+     * Log a message.
+     */
     log(message: string): void;
 };