Update docs/tutorials/cooperative_groups_tutorial.rst

Co-authored-by: Leo Paoletti <[email protected]>

docs/tutorials/cooperative_groups_tutorial.rst

@@ -61,15 +61,11 @@ Device side code
 
 .. TODO: Add link here to reduction tutorial and subsections
 
-To be able to calculate the sum of the sets of numbers, the tutorial using the
-shared memory based reduction at device side. In this tutorial the warp level
-intrinsics usage not covered like in the reduction tutorial. The ``x`` input
-variable is a shared pointer, which needs to be synchronized after every value
-changes. The ``thread_group`` input parameter can be ``thread_block_tile`` or
-``thread_block`` also, because the ``thread_group`` is the parent class of these
-types. The ``val`` is the numbers, which we wants to calculate the sum of. The
+To calculate the sum of the sets of numbers, the tutorial uses the shared memory-based reduction on the device side. The warp level intrinsics usage is not covered in this tutorial, unlike in the Reduction tutorial. The x input variable is a shared pointer, which needs to be synchronized after every value changes. The ``thread_group`` input parameter can be ``thread_block_tile`` or
+``thread_block`` because the ``thread_group`` is the parent class of these
+types. The ``val`` are the numbers to calculate the sum of. The
 returned results of this function return the final results of the reduction on
-thread ID 0 of the ``thread_group`` and at every other threads the function
+thread ID 0 of the ``thread_group``, and at every other thread, the function
 results are 0.
 
 .. code-block:: cpp