hardware-support/docs: Rename 'All scenario OS' to 'All scenarios OS'

* Renamed All scenario OS to All scenarios OS.

Signed-off-by: Arul Kumaran <arulkumaran.devarajan@huawei.com>

docs/hardware-support/boards/index.rst

@@ -5,7 +5,7 @@
 Supported Boards
 ################
 
-This section details the boards supported as part of All Scenario OS.
+This section details the boards supported as part of All Scenarios OS.
 
 .. toctree::
    :maxdepth: 1

docs/hardware-support/index.rst

@@ -4,11 +4,11 @@
 
 .. _HardwareSupport:
 
-Hardware support in All Scenario OS
-###################################
+Hardware support in All Scenarios OS
+####################################
 
 This section details the hardware (including virtualized) supported as part of
-All Scenario OS.
+All Scenarios OS.
 
 .. toctree::
    :maxdepth: 2

docs/hardware-support/virtual-boards/index.rst

@@ -5,7 +5,7 @@
 Supported Virtual Targets
 #########################
 
-This section details the support for virtual targets in All Scenario OS.
+This section details the support for virtual targets in All Scenarios OS.
 
 .. toctree::
    :maxdepth: 1