Update data-modeling_schema.adoc

The SQL statement you provided for creating a table in Cassandra has a small syntax issue with the comment. In Cassandra, comments should be enclosed in single quotes (') and preceded by the keyword WITH. Additionally, the comment text should be properly formatted

Author: Amritmatti

doc/modules/cassandra/pages/developing/data-modeling/data-modeling_schema.adoc

@@ -40,7 +40,7 @@ CREATE TABLE hotel.pois_by_hotel (
   hotel_id text,
   description text,
   PRIMARY KEY ((hotel_id), poi_name) )
-  WITH comment = Q3. Find pois near a hotel';
+  WITH comment = 'Q3. Find pois near a hotel';
 
 CREATE TABLE hotel.available_rooms_by_hotel_date (
   hotel_id text,