fix: add markdownlint config for trunk

Author: ryanrozich

.markdownlint.json

@@ -0,0 +1,10 @@
+{
+  "default": true,
+  "MD013": false,
+  "MD029": false,
+  "MD030": false,
+  "MD031": false,
+  "MD033": false,
+  "MD036": false,
+  "MD051": false
+}