Update source/fundamentals/serialization/poco.txt

Co-authored-by: Jordan Smith <[email protected]>

Author: mongoKart

source/fundamentals/serialization/poco.txt

@@ -403,7 +403,7 @@ types:
    :widths: 10 10 
 
    * - ID Validation 
-     - ``IIdGenerator`` Type 
+     - IIdGenerator Type 
    * - Not null 
      - ``NullIdChecker``
    * - Not all zeroes