more specific string distinction

Author: mayaraman19

source/fundamentals/bson/utf8-validation.txt

@@ -25,8 +25,8 @@ processing overhead since it needs to check the data.
 If you *disable* validation, your application avoids the validation processing
 overhead, but cannot guarantee consistent presentation of invalid UTF-8 data.
 
-By default, the driver enables UTF-8 validation on BSON strings in documents 
-from MongoDB. It checks incoming documents for any characters that are not 
+By default, the driver enables UTF-8 validation on BSON strings in documents
+from MongoDB. It checks incoming strings for any characters that are not 
 encoded in a valid UTF-8 format when it transfers data from MongoDB to your 
 application.