feat: add content to v-show on vue roadmap (#6311)

src/data/roadmaps/vue/content/v-show@_TlbGTKFCMO0wdLbC6xHX.md

@@ -1 +1,9 @@
-# v-show
+# v-show
+
+`v-show` is similar to `v-if` in that it allows you to conditionally render components. However, it does not remove the component from the DOM and merely toggles its `display` CSS property to be `hidden`. It also does not work with `v-else-if` oe `v-else`.
+
+Prefer `v-show` over `v-if` if the component's visibility needs to change often, and `v-if` if not.
+
+Visit the following resources to learn more:
+
+- [@official@Vue Conditional Rendering Docs](https://vuejs.org/guide/essentials/conditional.html#v-show)