Fix misc. spelling issues in docs (#1083)

* Update CHANGELOG.md
* Update CONTRIBUTING.md
* Update README.md

CHANGELOG.md

@@ -298,7 +298,7 @@ interface FeeDistribution {
 
 ### Added
 - `rpc.server.simulateTransaction` now supports an optional `stateChanges?: LedgerEntryChange[]` field ([#963](https://github.com/stellar/js-stellar-sdk/pull/963)):
-  * If `Before` is omitted, it constitutes a creation, if `After` is omitted, it constitutes a deletions, note that `Before` and `After` cannot be be omitted at the same time. Each item follows this schema:
+  * If `Before` is omitted, it constitutes a creation, if `After` is omitted, it constitutes a deletions, note that `Before` and `After` cannot be omitted at the same time. Each item follows this schema:
 
 ```typescript
 interface LedgerEntryChange {
@@ -348,7 +348,7 @@ import {
 +import { Spec } from '@stellar/stellar-sdk/contract'
 ```
 
-- Previously, `AssembledTransaction.signAndSend()` would return a `SentTransaction` even if the transaction never finalized. That is, if it successfully sent the transaction to the network, but the transaction was still `status: 'PENDING'`, then it would `console.error` an error message, but return the indeterminate transaction anyhow. **It now throws** a `SentTransaction.Errors.TransactionStillPending` error with that error message instead ([#962](https://github.com/stellar/js-stellar-sdk/pull/962)).
+- Previously, `AssembledTransaction.signAndSend()` would return a `SentTransaction` even if the transaction was never finalized. That is, if it successfully sent the transaction to the network, but the transaction was still `status: 'PENDING'`, then it would `console.error` an error message, but return the indeterminate transaction anyhow. **It now throws** a `SentTransaction.Errors.TransactionStillPending` error with that error message instead ([#962](https://github.com/stellar/js-stellar-sdk/pull/962)).
 
 ### Deprecated
 
@@ -732,7 +732,7 @@ Refer to the release notes for the betas (e.g. [v9.0.0-beta.0](https://github.co
 
 ### Updates
 
-- Updates the following SEP-10 utility functions to be compilant with the protocols ([#709](https://github.com/stellar/js-stellar-sdk/pull/709/), [stellar-protocol/#1036](https://github.com/stellar/stellar-protocol/pull/1036))
+- Updates the following SEP-10 utility functions to be compliant with the protocols ([#709](https://github.com/stellar/js-stellar-sdk/pull/709/), [stellar-protocol/#1036](https://github.com/stellar/stellar-protocol/pull/1036))
     - Updated `utils.buildChallengeTx()` to accept muxed accounts (`M...`) for client account IDs
     - Updated `utils.buildChallengeTx()` to accept a `memo` parameter to attach to the challenge transaction
     - Updated `utils.readChallengeTx()` to provide a `memo` property in the returned object
@@ -1052,7 +1052,7 @@ The following functions were renamed:
 - `xdr.OperationType.setOption()` -> `xdr.OperationType.setOptions()`
 - `xdr.OperationType.manageDatum()` -> `xdr.OperationType.manageData()`
 
-The following enum values were rename in `OperationType`:
+The following enum values were renamed in `OperationType`:
 
 - `setOption` -> `setOptions`
 - `manageDatum` -> `manageData`

CONTRIBUTING.md

@@ -20,6 +20,6 @@ In fact, you should follow [the steps there](https://github.com/stellar/js-stell
   }
 ```
 
-  - [ ] Finally, run `yarn` so that the dependency is pulled (ensuring its a valid version) and the lockfile is updated with the latest integrity details. You can now commit the change and PR accordingly.
+  - [ ] Finally, run `yarn` so that the dependency is pulled (ensuring it's a valid version) and the lockfile is updated with the latest integrity details. You can now commit the change and PR accordingly.
 
 Note that new versions will be published to npm **and** Bower by GitHub Actions.

README.md

@@ -65,7 +65,7 @@ You can use a CDN:
 <script src="https://cdnjs.cloudflare.com/ajax/libs/stellar-sdk/{version}/stellar-sdk.js"></script>
 ```
 
-Note that this method relies using a third party to host the JS library. This may not be entirely secure. You can self-host it via [Bower](http://bower.io):
+Note that this method relies on using a third party to host the JS library. This may not be entirely secure. You can self-host it via [Bower](http://bower.io):
 
 ```shell
 bower install @stellar/stellar-sdk