fix: liquid syntax error of footer copyright

_includes/views/footer.html

@@ -3,15 +3,15 @@
 
   <div class="wrapper">
     <div class="site-footer-inner">
-      <div>
-        {%- assign currYear = 'now' | date: "%Y" -%}
-        {{ site.copyright
-            | replace: '{currentYear}', currYear
+        {%- assign currentYear = 'now' | date: "%Y" -%}
+        {%- assign copyright = site.copyright
+            | replace: '{currentYear}', currentYear
             | replace: '{author}', site.author
             | replace: '(c)', '&copy;'
             | replace: '(p)', '℗'
             | replace: '(cleft)', '<span class="copyleft">&copy;</span>'
-        }}</div>
+        -%}
+      <div>{{ copyright }}</div>
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