Update gandiva external function document with license/title re-forma…

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apache · Nov 19, 2023 · 892ae01 · 892ae01
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diff --git a/docs/source/cpp/gandiva_external_func.rst b/docs/source/cpp/gandiva_external_func.rst
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 .. Licensed to the Apache Software Foundation (ASF) under one
-   or more contributor license agreements.  See the NOTICE file
-   distributed with this work for additional information
-   regarding copyright ownership.  The ASF licenses this file
-   to you 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
-
-   Unless required by applicable law or agreed to in writing,
-   software distributed under the License is distributed on an
-   "AS IS" BASIS, 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.
-
+.. or more contributor license agreements.  See the NOTICE file
+.. distributed with this work for additional information
+.. regarding copyright ownership.  The ASF licenses this file
+.. to you 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
+..
+.. Unless required by applicable law or agreed to in writing,
+.. software distributed under the License is distributed on an
+.. "AS IS" BASIS, 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.
+
+============================================
 Gandiva External Functions Development Guide
-############################################
+============================================
 
 1. Introduction
-================
+===============
 
 Gandiva, as an analytical expression compiler framework, extends its functionality through external functions. This guide is focused on helping developers understand, create, and integrate external functions into Gandiva. External functions are user-defined, third-party functions that can be used in Gandiva expressions.