Update template-syntax.md (vuejs#3054)

changed remove / insert to remove or insert, coz it feels like you're trying to remove '/', insert insert the <p>

Author: xahiru

src/guide/essentials/template-syntax.md

@@ -193,7 +193,7 @@ Directive attribute values are expected to be single JavaScript expressions (wit
 <p v-if="seen">Now you see me</p>
 ```
 
-Here, the `v-if` directive would remove / insert the `<p>` element based on the truthiness of the value of the expression `seen`.
+Here, the `v-if` directive would remove or insert the `<p>` element based on the truthiness of the value of the expression `seen`.
 
 ### Arguments {#arguments}