Fix the open record BBE description

examples/open-records/open_records.md

@@ -2,9 +2,7 @@
 
 A record type that uses either the `{` and `}` delimiters or the `{|` and `|}` delimiters with a rest descriptor is considered open. Open records allow fields other than those explicitly specified. 
 
-When the record is open due to using the  `{` and `}` delimiters, the expected type for any additional field is `anydata`. Such records belong to `map<anydata>`. 
-
-When the record is open due to the use of a rest descriptor, the expected type for any additional field is the type specified in the rest descriptor.
+When the record is open due to the use of the  `{` and `}` delimiters, the expected type for any additional field is `anydata`. When the record is open due to the use of a rest descriptor, the expected type for any additional field is the type specified in the rest descriptor.
 
 Quoted keys can be used to specify fields that are not explicitly specified in an open record type.