Fixed #28652 -- Fixed a few comments in django/db/models/*.

django/db/models/query.py

@@ -256,7 +256,7 @@ class QuerySet:
         """
         The queryset iterator protocol uses three nested iterators in the
         default case:
-            1. sql.compiler:execute_sql()
+            1. sql.compiler.execute_sql()
                - Returns 100 rows at time (constants.GET_ITERATOR_CHUNK_SIZE)
                  using cursor.fetchmany(). This part is responsible for
                  doing some column masking, and returning the rows in chunks.

django/db/models/sql/compiler.py

@@ -1052,8 +1052,7 @@ class SQLCompiler:
             raise
 
         if result_type == CURSOR:
-            # Caller didn't specify a result_type, so just give them back the
-            # cursor to process (and close).
+            # Give the caller the cursor to process and close.
             return cursor
         if result_type == SINGLE:
             try: