docs/cxl: Change to lowercase as others

Using the same style as elsewhere for topology / topo

Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Link: https://lore.kernel.org/r/20230519085802.2106900-2-lizhijian@cn.fujitsu.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

docs/system/devices/cxl.rst

@@ -157,7 +157,7 @@ responsible for allocating appropriate ranges from within the CFMWs
 and exposing those via normal memory configurations as would be done
 for system RAM.
 
-Example system Topology. x marks the match in each decoder level::
+Example system topology. x marks the match in each decoder level::
 
   |<------------------SYSTEM PHYSICAL ADDRESS MAP (1)----------------->|
   |    __________   __________________________________   __________    |
@@ -187,8 +187,8 @@ Example system Topology. x marks the match in each decoder level::
        ___________|___   __________|__   __|_________   ___|_________
    (3)|  Root Port 0  | | Root Port 1 | | Root Port 2| | Root Port 3 |
       |  Appears in   | | Appears in  | | Appears in | | Appear in   |
-      |  PCI topology | | PCI Topology| | PCI Topo   | | PCI Topo    |
-      |  As 0c:00.0   | | as 0c:01.0  | | as de:00.0 | | as de:01.0  |
+      |  PCI topology | | PCI topology| | PCI topo   | | PCI topo    |
+      |  as 0c:00.0   | | as 0c:01.0  | | as de:00.0 | | as de:01.0  |
       |_______________| |_____________| |____________| |_____________|
             |                  |               |              |
             |                  |               |              |
@@ -272,7 +272,7 @@ Example topology involving a switch::
       |  Root Port 0  |
       |  Appears in   |
       |  PCI topology |
-      |  As 0c:00.0   |
+      |  as 0c:00.0   |
       |___________x___|
                   |
                   |