fixup! fixup! Fix minor documentation typos

src/lib.rs

@@ -91,7 +91,7 @@ impl<T> Injector<T> {
     /// # Safety
     ///
     /// Item at `index` must be initialized. That means you must have observed
-    /// `push` returning this value or `get` retunring `Some` for this value.
+    /// `push` returning this value or `get` returning `Some` for this value.
     /// Just because a later index is initialized doesn't mean that this index
     /// is initialized
     pub unsafe fn get_unchecked(&self, index: u32) -> Item<'_, T> {