8230648: Replace @exception tag with @throws in java.base

Minor coding style update of javadoc tag in any file in java.base

Reviewed-by: prappo, lancea

src/java.base/share/classes/java/security/Permissions.java

@@ -116,7 +116,7 @@ implements Serializable
      *
      * @param permission the Permission object to add.
      *
-     * @exception SecurityException if this Permissions object is
+     * @throws    SecurityException if this Permissions object is
      * marked as readonly.
      *
      * @see PermissionCollection#isReadOnly()