8330178: Clean up non-standard use of /** comments in java.base

Reviewed-by: darcy, iris, dfuchs, aivanov, naoto

src/java.base/share/classes/java/net/HttpURLConnection.java

@@ -675,7 +675,7 @@ public abstract class HttpURLConnection extends URLConnection {
         return null;
     }
 
-    /**
+    /*
      * The response codes for HTTP, as of version 1.1.
      */