change from further to additional in the title

Author: chunyuan-w

prototype_source/max_autotune_on_CPU_tutorial.rst

@@ -1,4 +1,4 @@
-Use max-autotune compilation on CPU to gain further performance boost
+Use max-autotune compilation on CPU to gain additional performance boost
 ==============================================================
 
 **Author**: `Jiong Gong <https://github.com/jgong5>`__, `Leslie Fang <https://github.com/leslie-fang-intel>`__, `Chunyuan Wu <https://github.com/chunyuan-w>`__

prototype_source/prototype_index.rst

@@ -218,8 +218,8 @@ Prototype features are not available as part of binary distributions like PyPI o
    :tags: Model-Optimization
 
 .. customcarditem::
-   :header: Use max-autotune compilation on CPU to gain further performance boost
-   :card_description: Tutorial for max-autotune mode on CPU to gain further performance boost
+   :header: Use max-autotune compilation on CPU to gain additional performance boost
+   :card_description: Tutorial for max-autotune mode on CPU to gain additional performance boost
    :image: ../_static/img/thumbnails/cropped/generic-pytorch-logo.png
    :link: ../prototype/max_autotune_on_CPU_tutorial.html
    :tags: Model-Optimization