DOCSP-41784 update backport file and move tips to below code examples

Author: mballard-mdb

.backportrc.json

@@ -5,6 +5,9 @@
   // the branches available to backport to
   "targetBranchChoices": [
     "master",
+    "v6.17",
+    "v6.16",
+    "v6.15",
     "v6.14",
     "v6.13",
     "v6.12",

source/connect/mongoclient.txt

@@ -108,8 +108,6 @@ with behavior compatible with the specified API version.
 The following code shows how you can specify the connection string and the
 {+stable-api+} client option when connecting to a MongoDB deployment on Atlas and
 verify that the connection is successful:
- 
-.. include:: /includes/explicit-resource-management.rst
 
 .. literalinclude:: /code-snippets/connection/stable-api-connect.js
    :language: javascript
@@ -121,6 +119,8 @@ verify that the connection is successful:
    Call the ``MongoClient.connect()`` method explicitly if you want to verify that the
    connection is successful.
 
+.. include:: /includes/explicit-resource-management.rst
+
 To learn more about the {+stable-api+} feature, see the :ref:`{+stable-api+} page
 <nodejs-stable-api>`.
 

source/crud/transactions.txt

@@ -159,8 +159,6 @@ You must perform the following steps when using this API:
 The following code demonstrates how to perform a transaction by using
 the Core API:
 
-.. include:: /includes/explicit-resource-management.rst
-
 .. literalinclude:: /code-snippets/transactions/txn-api-examples.js
    :language: javascript
    :emphasize-lines: 2,4,10,16,20,24,26 
@@ -183,6 +181,8 @@ the Core API:
       const session = client1.startSession();
       client2.db('myDB').collection('myColl').insertOne({ name: 'Jane Eyre' }, { session });
 
+.. include:: /includes/explicit-resource-management.rst
+  
 To see a fully runnable example that uses this API, see the
 :ref:`node-usage-core-txn` usage example.