Update samples and readme (Azure#27311)

### Packages impacted by this PR
@azure/cosmos

### Issues associated with this PR
Azure#27273 

### Describe the problem that is addressed by this PR
Fix typos in readme and samples of change feed.

### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?


### Are there test cases added in this PR? _(If not, why?)_
N/A

### Provide a list of related PRs _(if any)_


### Command used to generate this PR:**_(Applicable only to SDK release
request PRs)_

### Checklists
- [ ] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
create an Issue in the
[Autorest/typescript](https://github.com/Azure/autorest.typescript)
repository and link it here)_
- [ ] Added a changelog (if necessary)

sdk/cosmosdb/cosmos/README.md

@@ -269,28 +269,28 @@ There are four starting positions for change feed:
 ```js
 // Signals the iterator to read changefeed from the beginning of time.
 const options = {
-  changeFeedStartFrom: ChangeFeedStartFrom.Beginning();
-}
+  changeFeedStartFrom: ChangeFeedStartFrom.Beginning(),
+};
 const iterator = container.getChangeFeedIterator(options);
 ```
 
 - `Time`
 
 ```js
 // Signals the iterator to read changefeed from a particular point of time.
-const time = new Date("2023/09/11") // some sample date
+const time = new Date("2023/09/11"); // some sample date
 const options = {
-  changeFeedStartFrom: ChangeFeedStartFrom.Time(time);
-}
+  changeFeedStartFrom: ChangeFeedStartFrom.Time(time),
+};
 ```
 
 - `Now`
 
 ```js
 // Signals the iterator to read changefeed from this moment onward.
 const options = {
-  changeFeedStartFrom: ChangeFeedStartFrom.Now();
-}
+  changeFeedStartFrom: ChangeFeedStartFrom.Now(),
+};
 ```
 
 - `Continuation`
@@ -299,8 +299,8 @@ const options = {
 // Signals the iterator to read changefeed from a saved point.
 const continuationToken = "some continuation token recieved from previous request";
 const options = {
-  changeFeedStartFrom: ChangeFeedStartFrom.Continuation(continuationToken);
-}
+  changeFeedStartFrom: ChangeFeedStartFrom.Continuation(continuationToken),
+};
 ```
 
 Here's an example of fetching change feed for a partition key
@@ -318,6 +318,7 @@ while (iterator.hasMoreResults) {
   // process this response
 }
 ```
+
 Because the change feed is effectively an infinite list of items that encompasses all future writes and updates, the value of `hasMoreResults` is always `true`. When you try to read the change feed and there are no new changes available, you receive a response with `NotModified` status.
 
 More detailed usage guidelines and examples of change feed can be found [here](https://learn.microsoft.com/azure/cosmos-db/nosql/change-feed-pull-model?tabs=javascript).

sdk/cosmosdb/cosmos/samples/v3/javascript/ChangeFeedIterator/ChangeFeedIteratorEpkRange.js

@@ -5,7 +5,7 @@
  * @summary Demonstrates using a ChangeFeed for an epk range
  */
 
-dotenv.config();
+require("dotenv").config();
 
 const { finish, handleError, logSampleHeader } = require("../Shared/handleError");
 const {