Updated per @rkumar-mongo review.

Author: Tony Sansone

source/includes/fact-mmapv1-big-endian.rst

@@ -1,7 +1,7 @@
 .. important::
 
-   MMAPv1 is unsupported on big-endian and certain bi-endian
-   architectures. This includes the IBM z/Architecture (``s390x``) and
-   PowerPC (``ppc64le``) platforms. MongoDB returns an error if you
-   set MMAPv1 as the storage engine on ``s390x`` and ``ppc64le``
-   platforms.
+   MMAPv1 is unsupported on big-endian architectures like the IBM
+   z/Architecture (``s390x``) and certain bi-endian architectures like
+   the PowerPC (``ppc64le``) platform. MongoDB returns an error if you
+   set ``MMAPv1`` as the storage engine for either the ``s390x`` or
+   ``ppc64le`` platforms. MMAPv1 was deprecated in MongoDB 4.0.

source/includes/list-table-products-supported-architecture.rst

@@ -5,21 +5,21 @@ version of MongoDB products:
 .. list-table::
    :header-rows: 1
    :widths: 40 15 15 15 15
-   
+
    * - Product
      - x86_64
      - ppc64le
      - s390x
-     - ARMv8-A
+     - AArch64
 
-   * - MongoDB Community (3.4+)
+   * - MongoDB Community (3.4 or later)
      - |checkmark|
-     - 
-     - 
+     -
+     -
      - |checkmark|
 
 
-   * - MongoDB Enterprise (3.4+)
+   * - MongoDB Enterprise (3.4 or later)
      - |checkmark|
      - |checkmark|
      - |checkmark|
@@ -30,7 +30,7 @@ version of MongoDB products:
      - |checkmark|
      - |checkmark|
      - |checkmark|
-     - 
+     -
 
    * - `Compass <https://docs.mongodb.com/compass/current/install/>`__
      - |checkmark|