chore: clean typos and formatting

Author: vogdb

README.md

@@ -101,7 +101,9 @@ v0.toV1().toString()
 
 ### Multicodec Encoders / Decoders / Codecs
 
-This library defines [`BlockEncoder`, `BlockDecoder` and `BlockCodec` interfaces](https://github.com/multiformats/js-multiformats/blob/master/src/codecs/interface.ts). Codec implementations should conform to the `BlockCodec` interface which implements both `BlockEncoder` and `BlockDecoder`.
+This library defines [`BlockEncoder`, `BlockDecoder` and `BlockCodec` interfaces](https://github.com/multiformats/js-multiformats/blob/master/src/codecs/interface.ts).
+Codec implementations should conform to the `BlockCodec` interface which implements both `BlockEncoder` and `BlockDecoder`.
+Here is an example implementation of JSON `BlockCodec`.
 
 ```js
 /**
@@ -182,7 +184,7 @@ console.log(blocks)
 ## Implementations
 
 By default, no base encodings (other than base32 & base58btc), hash functions,
-or codec implementations are included exposed by `multiformats`, you need to
+or codec implementations are exposed by `multiformats`, you need to
 import the ones you need yourself.
 
 ### Multibase codecs

src/cid.js

@@ -205,7 +205,7 @@ export class CID {
       return new CID(version, code, multihash, bytes || encodeCID(version, code, multihash.bytes))
     } else if (value != null && value[cidSymbol] === true) {
     // If value is a CID from older implementation that used to be tagged via
-    // symbol we still rebase it to the this `CID` implementation by
+    // symbol we still rebase it to this `CID` implementation by
     // delegating that to a constructor.
       const { version, multihash, code } = value
       const digest = Digest.decode(multihash)

src/hashes/interface.ts

@@ -26,7 +26,7 @@ export interface MultihashDigest<Code extends number = number> {
   size: number
 
   /**
-   * Binary representation of the this multihash digest.
+   * Binary representation of this multihash digest.
    */
   bytes: Uint8Array
 }