message: docs: fix the tehem switcher crash
diff: <button @click="isDark = !isDark" class="opacity-50 transition-opacity duration-200 hover:opacity-100i">
  <transition name="popup" mode="out-in">
  <svg
  + v-if="isDark"
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  version="1.1"
  height="24"
  viewBox="0 0 24 24"
  class="fill-current text-white"
  - v-if="isDark"
  >
  <title>Dark Mode</title>
  <path d="M0 0h24v24H0z" fill="none" />
  d="M11,12A8,8,0,0,0,5.67,4.46a1,1,0,0,1,0-1.88A9.66,9.66,0,0,1,9,2,10,10,0,0,1,9,22a9.66,9.66,0,0,1-3.34-.58,1,1,0,0,1,0-1.88A8,8,0,0,0,11,12Z"
  />
  </svg>
  - </transition>
  - <transition name="popup" mode="out-in">
  <svg
  + v-else
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  version="1.1"
  height="24"
  viewBox="0 0 24 24"
  class="fill-current text-gray-700"
  - v-if="!isDark"
  >
  <title>Light Mode</title>
  <path d="M0 0h24v24H0z" fill="none" />
  