DOCS-14648 CSFLE template clarification (#757)

* added note about substitution needed

Author: kyuan-mongodb

source/includes/steps-fle-convert-to-a-remote-master-key-aws.yaml

@@ -74,6 +74,8 @@ content: |
 
   2. Next, add your authentication credentials to your CSFLE-enabled client
      code:
+     
+  .. include:: /includes/substitute-placeholders.rst
 
   .. tabs-drivers::
 
@@ -195,7 +197,9 @@ content: |
 
   2. Once you have the required information, update and run the following code
      to generate the new data encryption key:
-
+     
+  .. include:: /includes/substitute-placeholders.rst
+  
   .. tabs-drivers::
 
      .. tab::

source/includes/steps-fle-convert-to-a-remote-master-key-azure.yaml

@@ -81,6 +81,8 @@ content: |
   2. Next, update the KMS Provider configuration in your CSFLE-enabled client
      creation code:
 
+     .. include:: /includes/substitute-placeholders.rst
+
      .. tabs-drivers::
 
         .. tab::
@@ -247,6 +249,8 @@ content: |
   2. Once you have the required information, update and run the following code
      to generate a new data encryption key:
 
+     .. include:: /includes/substitute-placeholders.rst
+     
      .. tabs-drivers::
 
         .. tab::

source/includes/steps-fle-convert-to-a-remote-master-key-gcp.yaml

@@ -91,6 +91,8 @@ content: |
 
   2. Next, add your authentication credentials to your CSFLE-enabled client
      code:
+      
+     .. include:: /includes/substitute-placeholders.rst
 
      .. tabs-drivers::
 
@@ -256,6 +258,8 @@ content: |
   2. Once you have the required information, update and run the following code
      to generate a new data encryption key:
 
+     .. include:: /includes/substitute-placeholders.rst
+     
      .. tabs-drivers::
 
         .. tab::

source/includes/substitute-placeholders.rst

@@ -0,0 +1,20 @@
+.. note:: Placeholder Text
+
+    You must substitute all text in quotes and angle brackets with
+    your KMS configuration values. 
+
+    For example, the Node.js code prompts you to include an email as
+    follows: 
+
+    .. code-block:: javascript
+       :copyable: false
+
+        email: "<GCP service account email>"
+    
+    If your GCP service account email is "[email protected]", you should
+    substitute the text as follows: 
+
+    .. code-block:: javascript
+       :copyable: false
+
+        email: "[email protected]"