docs: update workflow

Author: vberlier

.github/workflows/docs.yml

@@ -3,6 +3,7 @@ name: Docs
 on:
   push:
     branches: [main]
+    paths: ['zensical.toml', 'docs/**']
   workflow_dispatch:
 
 permissions:

.github/workflows/main.yml

@@ -3,6 +3,7 @@ name: CI
 on:
   push:
     branches: [main, beta]
+    paths-ignore: ['zensical.toml', 'docs/**']
   pull_request:
     branches: [main, beta]