minor: asterisk move

Author: Sam Kleinman

source/core/write-operations.txt

@@ -345,11 +345,11 @@ operations, see :doc:`/tutorial/perform-two-phase-commits`.
 Updates
 -------
 
-Each document in a MongoDB collection has allocated *record space*
+Each document in a MongoDB collection has allocated *record* space
 which includes the entire document *and* a small amount of
 padding. This padding makes it possible for update operations to
 increase the size of a document slightly without causing the document
-to outgrow the allocated record size. 
+to outgrow the allocated record size.
 
 Documents in MongoDB can grow up to the full maximum :limit:`BSON
 document size <BSON Document Size>`; however, when documents outgrow