Add markdownlint

Author: marcos-muino-garcia

.markdownlint.json

@@ -0,0 +1,8 @@
+{
+  "first-line-h1": false,
+  "line-length": false,
+  "no-duplicate-heading": {
+    "siblings_only": true
+  },
+  "no-inline-html": false
+}

README.md

@@ -8,12 +8,11 @@ Easily execute AI-generated code in a secure, scalable environment with full sup
 
 [n8n](https://n8n.io/) is a [fair-code licensed](https://docs.n8n.io/reference/license/) workflow automation platform.
 
-[Installation](#installation)  
-[Operations](#operations)  
-[Credentials](#credentials)  
-[Compatibility](#compatibility)  
-[Usage](#usage)  
-[Resources](#resources)  
+[Installation](#installation)
+[Operations](#operations)
+[Credentials](#credentials)
+[Usage](#usage)
+[Resources](#resources)
 
 ## Installation