docs: Fixes broken anchor links (#916)

Author: dbachko

README.md

@@ -60,13 +60,18 @@ You can check the development status at the [Waffle Board](https://waffle.io/ipf
     - [Create a IPFS node instance](#create-a-ipfs-node-instance)
   - [Tutorials and Examples](#tutorials-and-examples)
   - [API](#api)
-      - [Generic API](#generic-api)
-      - [Block API](#block-api)
-      - [Object API](#object-api)
-      - [Config API](#config-api)
-      - [Files API](#files-api)
-      - [Swarm API](#swarm-api)
-      - [libp2p API](#libp2p-api)
+      - [Bitswap API](#bitswap)
+      - [Block API](#block)
+      - [Bootstrap API](#bootstrap)
+      - [Config API](#config)
+      - [DAG API](#dag)
+      - [Files API](#files)
+      - [Generic API](#generic-operations)
+      - [Object API](#object)
+      - [PubSub API](#pubsub)
+      - [Repo API](#repo)
+      - [Swarm API](#swarm)
+      - [libp2p API](#libp2p)
       - [Domain data types](#domain-data-types)
 - [Packages](#packages)
 - [Development](#development)