Merge pull request #31501 from dixitp012/active_record_basic_guide

[ci skip] Added Object Relational Mapping wiki link

guides/source/active_record_basics.md

@@ -38,7 +38,7 @@ object on how to write to and read from the database.
 
 ### Object Relational Mapping
 
-Object Relational Mapping, commonly referred to as its abbreviation ORM, is
+[Object Relational Mapping](https://en.wikipedia.org/wiki/Object-relational_mapping), commonly referred to as its abbreviation ORM, is
 a technique that connects the rich objects of an application to tables in
 a relational database management system. Using ORM, the properties and
 relationships of the objects in an application can be easily stored and