DOCSP-25972-clarify update requirements (#2027)

* DOCSP-25972-clarify update requirements

* Review feedback

Author: Dave Cuthbert

source/core/timeseries/timeseries-limitations.txt

@@ -61,14 +61,7 @@ Delete commands must meet the following requirements:
 
 Update commands must meet the following requirements:
 
-- The query may only match on ``metaField`` field values.
-- The update command may only modify the ``metaField`` field value.
-- The update must be performed with an update document that contains
-  only :ref:`update operator <update-operators>` expressions.
-- The update command may not limit the number of documents to be
-  updated. You must use an update command with ``multi: true`` or the
-  :method:`~db.collection.updateMany()` method.
-- The update command may not set :ref:`upsert: true <update-upsert>`.
+.. include:: /includes/time-series/fact-update-limitations.rst
 
 In MongoDB 5.0, :ref:`Time series collections
 <manual-timeseries-collection>` only support insert operations and read

source/includes/time-series/fact-update-limitations.rst

@@ -0,0 +1,8 @@
+- The query only matches on ``metaField`` field values.
+- The update command only modifies the ``metaField`` field value.
+- The update document can only contain :ref:`update operator
+  <update-operators>` expressions.
+- The update command must not limit the number of documents to be
+  updated. Set ``multi: true`` or use the
+  :method:`~db.collection.updateMany()` method. 
+- The update command must not set :ref:`upsert: true <update-upsert>`.

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

@@ -288,7 +288,11 @@ Time Series Collections
 
 The :method:`~db.collection.updateMany()` method is available for
 :term:`time series collections <time series collection>` starting in
-MongoDB 5.1.
+MongoDB 5.1. 
+
+Update commands must meet the following requirements:
+
+.. include:: /includes/time-series/fact-update-limitations.rst
 
 .. _updateMany-sharded-collection: