diff --git a/.lintstagedrc.js b/.lintstagedrc.js
index 1d706b574..73bd49575 100644
--- a/.lintstagedrc.js
+++ b/.lintstagedrc.js
@@ -11,10 +11,10 @@ const escape = require('shell-quote').quote
  */
 
 module.exports = {
-  '*.{ts,tsx,js,json,css}': filenames => [
+  '*.{ts,tsx,js,json,css,md}': filenames => [
     ...filenames.map(filename => `prettier --check "${escape([filename])}"`),
     ...filenames.map(filename => `git add "${filename}"`),
   ],
-  '*.{ts,tsx,js}': ['eslint'],
-  '*.{ts,tsx,css}': ['stylelint'],
+  '*.{ts,tsx,js,md}': ['eslint'],
+  '*.{ts,tsx,css,md}': ['stylelint'],
 }
diff --git a/docs/concepts/01-interfaces.md b/docs/concepts/01-interfaces.md
index 42d181f99..63e352d58 100644
--- a/docs/concepts/01-interfaces.md
+++ b/docs/concepts/01-interfaces.md
@@ -93,7 +93,9 @@ const isImageElement = element => {
 }
 ```
 
-You can define these as one-off functions easily. But you might also bundle them up into namespaces, just like the core interfaces do, and use them instead. For example:
+You can define these as one-off functions easily. But you might also bundle them up into namespaces, just like the core interfaces do, and use them instead.
+
+For example:
 
 ```javascript
 import { Element } from 'slate'