DOCS-15213 deprecates reIndex (#942)

* additional considerations

* internal review updates

Author: jmd-mongo

source/reference/command/reIndex.txt

@@ -15,6 +15,11 @@ Definition
 
 .. dbcommand:: reIndex
 
+   .. deprecated:: 6.0
+   
+   Attempting to run the :dbcommand:`db.collection.reIndex()` command 
+   writes a warning message to the log.
+   
    The :dbcommand:`reIndex` command drops all indexes on a
    collection and recreates them. This operation may be expensive for
    collections that have a large amount of data and/or a large number

source/reference/method/db.collection.reIndex.txt

@@ -14,11 +14,14 @@ Definition
 ----------
 
 .. method:: db.collection.reIndex()
-
+   
+   .. deprecated:: 6.0
+   
+   Attempting to run the :method:`db.collection.reIndex()` method 
+   writes a warning message to the log.
 
    .. include:: /includes/fact-mongosh-shell-method.rst
 
-
    The :method:`db.collection.reIndex()` drops all indexes on a
    collection and recreates them. This operation may be expensive for
    collections that have a large amount of data and/or a large number

source/release-notes/6.0-compatibility.txt

@@ -19,3 +19,26 @@ Time Series Collections
 -----------------------
 
 .. include:: /includes/time-series-secondary-indexes-downgrade-FCV.rst
+
+General Changes
+---------------
+
+Deprecations
+~~~~~~~~~~~~
+
+.. list-table::
+   :widths: 20 80
+   :header-rows: 1
+
+   * - Deprecated
+
+     - Description
+
+   * - :method:`db.collection.reIndex()`
+
+     - The :method:`db.collection.reIndex()` method is deprecated in 
+       MongoDB v6.0. 
+
+   * - :dbcommand:`reIndex`
+
+     - The :dbcommand:`reIndex` command is deprecated in MongoDB v6.0.