Do not detect spurrious proprietary license

Reference: #3543
Reported-by: Omair Majid @omajid
Signed-off-by: Philippe Ombredanne <[email protected]>

Author: pombredanne

src/licensedcode/data/rules/apache-2.0_1231.RULE

@@ -8,9 +8,9 @@ ignorable_urls:
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Use is subject to license terms.
+ * {{Use is subject to license terms.
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
+ * Licensed under the Apache License, Version 2.0}} (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  * http://www.apache.org/licenses/LICENSE-2.0
@@ -19,4 +19,4 @@ ignorable_urls:
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- */
+ */