refactor: 🚚 Make paths under /entities use the singular form

app/entities/follow-reject/page.mdx

@@ -0,0 +1,52 @@
+export const metadata = {
+    title: 'FollowReject',
+    description: 'FollowReject lets users reject follow requests',
+}
+
+# FollowReject
+
+<Note>
+    Refer to the [Follow](/entities/follow) entity for information on how follow relationships work.
+</Note>
+
+## Removing followers
+
+`FollowReject` can also be used *after* a follow relationship has been established to remove a follower.
+
+For example, if Bob requests to follow Alice, this entity is used when:
+- Alice wants to reject Bob's follow request.
+
+But it can also be used when Bob is already following Alice, in the case that:
+- Alice wants to remove Bob as a follower.
+
+## Entity Definition
+
+<Row>
+    <Col>
+        <Properties>
+            <Property name="uri" type="null" required={false}>
+                This entity does not have a URI.
+            </Property>
+            <Property name="author" type="URI" required={true} typeLink="/types#uri">
+                URI of the `User` considered the 'followee', i.e. the user who is being followed.
+            </Property>
+            <Property name="follower" type="URI" required={true} typeLink="/types#uri">
+                URI of the `User` considered the 'follower', i.e. the user who is trying to follow the author.
+            </Property>
+        </Properties>
+    </Col>
+
+    <Col sticky>
+
+    ```jsonc {{ title: 'Example FollowReject' }}
+    {
+        "type": "FollowReject",
+        "id": "3e7e4750-afd4-4d99-a256-02f0710a0520",
+        "author": "https://example.com/users/6e0204a2-746c-4972-8602-c4f37fc63bbe",
+        "created_at": "2021-01-01T00:00:00.000Z",
+        "follower": "https://example.com/users/02e1e3b2-cb1f-4e4a-b82e-98866bee5de7"
+    }
+    ```
+
+    </Col>
+</Row>