DOCS-11163 - Fixing note about sharded collections for remove ops

Author: jeff-allen-mongo

source/includes/fact-single-modification-in-sharded-collections.rst

@@ -1,4 +1,6 @@
-All |single-modification-operation-names| operations for a sharded collection
-must include the :term:`shard key` *or* the ``_id`` field in the query
-specification. |single-modification-operation-names| operations without the
-:term:`shard key` *or* the ``_id`` field return an error.
+All |single-modification-operation-names| operations for a sharded
+collection that specify the ``justOne`` option must include the
+:term:`shard key` *or* the ``_id`` field in the query specification.
+|single-modification-operation-names| operations specifying ``justOne``
+in a sharded collection which do not contain either the
+:term:`shard key` or the ``_id`` field return an error.