markdownlint, prettier: enable formatting

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I3f1eb4fd602cf9f6403836e554ad6d6f6e76f9db
diff --git a/.prettierrc.yaml b/.prettierrc.yaml
new file mode 100644
index 0000000..f07fbdd
--- /dev/null
+++ b/.prettierrc.yaml
@@ -0,0 +1,3 @@
+tabWidth: 2
+overrides:
+    - { "files": "*.yaml", "options": { "tabWidth": 4 } }