docs: fix build script

.github/workflows/documents.yml

@@ -50,11 +50,18 @@ jobs:
       - name: Copy image asset (sample)
         run: cp vutron-sample.webp docs/public
 
-      - name: Find and Replace
+      - name: Find and Replace (logo)
         uses: jacobtomlinson/gha-find-replace@v2
         with:
           find: "src/renderer/public/images/vutron-logo.webp"
-          replace: "/vutron-logo.webp"
+          replace: "public/vutron-logo.webp"
+          regex: false
+
+      - name: Find and Replace (sample)
+        uses: jacobtomlinson/gha-find-replace@v2
+        with:
+          find: "vutron-sample.webp"
+          replace: "public/vutron-sample.webp"
           regex: false
 
       # run build script