docs: replace SQLite with SQLite3

It is the DB driver name.

Author: kenjis

user_guide_src/source/database/query_builder.rst

@@ -1201,7 +1201,7 @@ Generates a batch **DELETE** statement based on a set of data.
 
 This method may be especially useful when deleting data in a table with a composite primary key.
 
-.. note:: SQLite does not support the use of ``where()``.
+.. note:: SQLite3 does not support the use of ``where()``.
 
 Delete from a Query
 ^^^^^^^^^^^^^^^^^^^