docs: fix grammar in disclaimer

src/guide/composition-api-provide-inject.md

@@ -1,6 +1,6 @@
 # Provide / Inject
 
-> This guide assumes that you have already read the [Provide / Inject](component-provide-inject.html), [Composition API Introduction](composition-api-introduction.html), and [Reactivity Fundamentals](reactivity-fundamentals.html).
+> This guide assumes that you have already read [Provide / Inject](component-provide-inject.html), [Composition API Introduction](composition-api-introduction.html), and [Reactivity Fundamentals](reactivity-fundamentals.html).
 
 We can use [provide / inject](component-provide-inject.html) with the Composition API as well. Both can only be called during [`setup()`](composition-api-setup.html) with a current active instance.