docs(cloudfront): fix typos (#31018)

Some typo fixes in the CloudFrontWebDistribution docs.

### Checklist
- [X] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/aws-cdk-lib/aws-cloudfront/lib/web-distribution.ts

@@ -129,7 +129,7 @@ interface SourceConfigurationRender {
 
 /**
  * A source configuration is a wrapper for CloudFront origins and behaviors.
- * An origin is what CloudFront will "be in front of" - that is, CloudFront will pull it's assets from an origin.
+ * An origin is what CloudFront will "be in front of" - that is, CloudFront will pull its assets from an origin.
  *
  * If you're using s3 as a source - pass the `s3Origin` property, otherwise, pass the `customOriginSource` property.
  *
@@ -479,7 +479,7 @@ export interface LambdaFunctionAssociation {
   /**
    * Allows a Lambda function to have read access to the body content.
    * Only valid for "request" event types (`ORIGIN_REQUEST` or `VIEWER_REQUEST`).
-   * See https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/lambda-include-body-access.html
+   * @see https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/lambda-include-body-access.html
    *
    * @default false
    */
@@ -736,7 +736,7 @@ export interface CloudFrontWebDistributionAttributes {
  * });
  * ```
  *
- * This will create a CloudFront distribution that uses your S3Bucket as it's origin.
+ * This will create a CloudFront distribution that uses your S3Bucket as its origin.
  *
  * You can customize the distribution using additional properties from the CloudFrontWebDistributionProps interface.
  *