Swap light and dark toggle

Author: joshmoore

_includes/head/custom.html

@@ -295,7 +295,7 @@
     const icon = button.querySelector('.theme-toggle-icon');
     const text = button.querySelector('.theme-toggle-text');
 
-    if (currentTheme === THEME_DARK) {
+    if (currentTheme === THEME_LIGHT) {
       icon.innerHTML = '☀️';
       text.textContent = 'Light';
       button.setAttribute('aria-label', 'Switch to light mode');