docs: fix grammar, typos, and path errors in documentation

Author: dsoko1ov

CONTRIBUTING.md

@@ -55,7 +55,7 @@ Then, from the root folder run:
 - `yarn build` to build packages
 - `yarn test` to ensure that the test suite runs correctly
 
-NOTE: Running `yarn test` currently fails due to an environment issue with shuttle. you can still run `yarn test` successfully from all the other repositories.
+NOTE: Running `yarn test` currently fails due to an environment issue with shuttle. You can still run `yarn test` successfully from all the other repositories.
 
 ### 2.2 Signing Commits
 
@@ -150,7 +150,7 @@ const parseMessage = (message: string): HubResult<Uint8Array> => {
 
 ---
 
-Always wrap external calls with `Result.fromThrowable` or `ResultAsync.fromPromise` and wrap external an `Error` into a `HubError`.
+Always wrap external calls with `Result.fromThrowable` or `ResultAsync.fromPromise` and wrap an external `Error` into a `HubError`.
 
 ```ts
 // incorrect usage

packages/hub-nodejs/docs/Builders.md

@@ -27,7 +27,7 @@ Before you can build messages, you'll need to construct the following objects:
 
 ### Ed25519Signer
 
-A Ed25519Signer is an EdDSA key pair which is necessary for signing most messages on behalf of an fid. This example below shows how to construct a new `NobleEd25519Signer` using the [@noble](https://paulmillr.com/noble/) library:
+An Ed25519Signer is an EdDSA key pair which is necessary for signing most messages on behalf of an fid. This example below shows how to construct a new `NobleEd25519Signer` using the [@noble](https://paulmillr.com/noble/) library:
 
 ```typescript
 import { NobleEd25519Signer } from '@farcaster/hub-nodejs';
@@ -40,7 +40,7 @@ const ed25519Signer = new NobleEd25519Signer(privateKey);
 
 ### Eip712Signer
 
-An Eip712Signer is an ECDSA key pair that is necessary signing for some messages like `SignerAdds` and `Verifications`. This example shows how to construct an `EthersEip712Signer` from a wallet's recovery phrase:
+An Eip712Signer is an ECDSA key pair that is necessary for signing some messages like `SignerAdds` and `Verifications`. This example shows how to construct an `EthersEip712Signer` from a wallet's recovery phrase:
 
 ```typescript
 import { EthersEip712Signer } from '@farcaster/hub-nodejs';

packages/hub-nodejs/examples/hello-world/README.md

@@ -18,6 +18,6 @@ You can try out a web version of this at https://farcaster-signup-demo-wkulikows
 ### Run locally
 
 1. Clone the repo locally
-2. Navigate to this folder with `cd packages/hub-nodejs/examples/write-data`
+2. Navigate to this folder with `cd packages/hub-nodejs/examples/hello-world`
 3. Run `yarn install` to install dependencies
 4. Run `yarn start`

packages/hub-nodejs/examples/write-data/README.md

@@ -1,6 +1,6 @@
 ## Writing Data to Hubs
 
-An example that different types of messages like casts, reactions, follows, etc. given a signer private key for an fid. 
+An example that writes different types of messages like casts, reactions, follows, etc. given a signer private key for an fid. 
 
 The example runs on testnet by default so that you can make changes safely without affecting your mainnet data.