chore(docs): fix typos (#32864)

### Issue # (if applicable)

None

### Reason for this change

Fixed typos in code comments.

### 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-lambda/lib/function-base.ts

@@ -316,7 +316,7 @@ export abstract class FunctionBase extends Resource implements IFunction, ec2.IC
   protected _invocationGrants: Record<string, iam.Grant> = {};
 
   /**
-   * Mapping of fucntion URL invocation principals to grants. Used to de-dupe `grantInvokeUrl()` calls.
+   * Mapping of function URL invocation principals to grants. Used to de-dupe `grantInvokeUrl()` calls.
    * @internal
    */
   protected _functionUrlInvocationGrants: Record<string, iam.Grant> = {};

packages/aws-cdk-lib/aws-lambda/lib/lambda-insights.ts

@@ -105,7 +105,7 @@ export abstract class LambdaInsightsVersion {
     return new InsightsArn();
   }
 
-  // Use the verison to build the object. Not meant to be called by the user -- user should use e.g. VERSION_1_0_54_0
+  // Use the version to build the object. Not meant to be called by the user -- user should use e.g. VERSION_1_0_54_0
   private static fromInsightsVersion(insightsVersion: string): LambdaInsightsVersion {
     class InsightsVersion extends LambdaInsightsVersion {
       public readonly layerVersionArn = Lazy.uncachedString({

packages/aws-cdk-lib/aws-lambda/lib/singleton-lambda.ts

@@ -80,7 +80,7 @@ export class SingletonFunction extends FunctionBase {
     this.runtime = this.lambdaFunction.runtime;
     this.grantPrincipal = this.lambdaFunction.grantPrincipal;
 
-    this.canCreatePermissions = true; // Doesn't matter, addPermission is overriden anyway
+    this.canCreatePermissions = true; // Doesn't matter, addPermission is overridden anyway
   }
 
   /**