bmc/test/README: reformat to be more stable under linters

Some formatting, especially when there are lists with shell
snippets, seem to be less stable in formatting between prettier
and markdownlint.  Using code-block formatting for code blocks
is better anyhow.  Switch to use that to avoid the issue.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ie28fa04ec7c5e2332931bf76054697ce17c77b52
diff --git a/bmc/test/README.md b/bmc/test/README.md
index d35f498..1029dd3 100644
--- a/bmc/test/README.md
+++ b/bmc/test/README.md
@@ -5,11 +5,14 @@
 - When using an SDK - make sure it has been built for an x86 machine.
 
   Run the following commands:
-  1. meson -Dtests=enabled build
-  2. ninja -C build test
+
+  ```shell
+  meson -Dtests=enabled build
+  ninja -C build test
+  ```
 
 - WHEN RUNNING UTEST remember to take advantage of the gtest capabilities.
   "./build/test/utest --help"
-  - --gtest_repeat=[COUNT]
-  - --gtest_shuffle
-  - --gtest_random_seed=[NUMBER]
+  - `--gtest_repeat=[COUNT]`
+  - `--gtest_shuffle`
+  - `--gtest_random_seed=[NUMBER]`