DOCS-293 minor edits

Author: Bob Grabar

source/administration/sharding.txt

@@ -805,13 +805,16 @@ that is not increasing in value. For example in some cases you could
 reverse all the bits of your shard key, which preserves information
 while avoiding the increasing sequence of values.
 
-:term:`BSON` :term:`ObjectIds <ObjectId>` increase in value with each
-insert. To more evenly distribute inserts based on this property, you
-might want at generation time to reverse the bits of the ObjectIds or to
-swap the first and last 16-bit words, to "shuffle" the inserts.
-Alternatively you might use UUIDs instead, but check that your UUID
-generator does not generate consistent increasing UUIDs, which would
-cause the same behavior.
+:term:`BSON` :term:`ObjectIds <ObjectId>` are one case of a value that
+monotonically increases during an insert. If you use :term:`ObjectId` as
+a shard key, then you can do either of the following at generation time
+to more evenly distribute inserts based on this property:
+
+- Reverse the bits of the ObjectIds, or
+- Swap the first and last 16-bit words, to "shuffle" the inserts.
+- Use UUIDs instead, but check that your UUID generator does not
+  generate consistent increasing UUIDs, which would cause the same
+  behavior.
 
 .. example:: The following example, in C++, swaps the leading and
    trailing 16-bit word of object IDs generated so that they are no