chore: update readme.md

cossssmin · cossssmin · commit 11919d658d6c · 2024-02-27T19:41:43.000+02:00
diff --git a/README.md b/README.md
@@ -66,7 +66,7 @@ posthtml([
 ### `tags`
 
 Type: `Array`\
-Default: `[a]`
+Default: `['a']`
 
 Array of tag names to process. 
 
