docs: ABI: sysfs-uevent: make it compatible with ReST output

- Replace " by ``, in order to use monospaced fonts;
- mark literal blocks as such.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/63904cc9b6a8581c5fc2ea1dca5d925874c67372.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: mchehab

Documentation/ABI/testing/sysfs-uevent

@@ -6,42 +6,46 @@ Description:
                 Enable passing additional variables for synthetic uevents that
                 are generated by writing /sys/.../uevent file.
 
-                Recognized extended format is ACTION [UUID [KEY=VALUE ...].
+                Recognized extended format is::
 
-                The ACTION is compulsory - it is the name of the uevent action
-                ("add", "change", "remove"). There is no change compared to
-                previous functionality here. The rest of the extended format
-                is optional.
+			ACTION [UUID [KEY=VALUE ...]
+
+                The ACTION is compulsory - it is the name of the uevent
+                action (``add``, ``change``, ``remove``). There is no change
+                compared to previous functionality here. The rest of the
+                extended format is optional.
 
                 You need to pass UUID first before any KEY=VALUE pairs.
-                The UUID must be in "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+                The UUID must be in ``xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx``
                 format where 'x' is a hex digit. The UUID is considered to be
                 a transaction identifier so it's possible to use the same UUID
                 value for one or more synthetic uevents in which case we
                 logically group these uevents together for any userspace
                 listeners. The UUID value appears in uevent as
-                "SYNTH_UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" environment
+                ``SYNTH_UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx`` environment
                 variable.
 
                 If UUID is not passed in, the generated synthetic uevent gains
-                "SYNTH_UUID=0" environment variable automatically.
+                ``SYNTH_UUID=0`` environment variable automatically.
 
                 The KEY=VALUE pairs can contain alphanumeric characters only.
+
                 It's possible to define zero or more pairs - each pair is then
                 delimited by a space character ' '. Each pair appears in
-                synthetic uevent as "SYNTH_ARG_KEY=VALUE". That means the KEY
-                name gains "SYNTH_ARG_" prefix to avoid possible collisions
+                synthetic uevent as ``SYNTH_ARG_KEY=VALUE``. That means the KEY
+                name gains ``SYNTH_ARG_`` prefix to avoid possible collisions
                 with existing variables.
 
-                Example of valid sequence written to the uevent file:
+                Example of valid sequence written to the uevent file::
 
                     add fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed A=1 B=abc
 
-                This generates synthetic uevent including these variables:
+                This generates synthetic uevent including these variables::
 
                     ACTION=add
                     SYNTH_ARG_A=1
                     SYNTH_ARG_B=abc
                     SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed
+
 Users:
                 udev, userspace tools generating synthetic uevents