ci: fix docs folder has been renamed to site (#1986)

* Update and rename docs.yml to site.yml

* Update sync.yml

* Update sync.yml

.github/sync.yml

@@ -1,5 +1,5 @@
 discordeno/guide:
-  - source: docs/
+  - source: site/
     dest: ./
     exclude: |
       README.md

.github/workflows/site.yml

@@ -1,9 +1,9 @@
-name: Docs
+name: Site Sync
 
 on:
   push:
     paths:
-      - "docs/**"
+      - "site/**"
 
 jobs:
   sync: