chore(lambda): fix snapstart warning grammar issue (#32829)

### Issue #32210 

Closes #32210 

### Reason for this change

Incorrect grammar in a SnapStart warning that appears during cdk deployment.

### Description of changes

Corrected the line:

`SnapStart only support published Lambda versions. Ignore if function already have published versions`

to:

`SnapStart only supports published Lambda versions. Ignore if function already has published versions.`

### Describe any new or updated permissions being added

No permissions changes.

### Description of how you validated changes

No testing needed, only changed text in a warning.

### 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.ts

@@ -1620,7 +1620,7 @@ Environment variables can be marked for removal when used in Lambda@Edge by sett
     // so it can't be checked at function set up time
     // SnapStart supports the Java 11 and Java 17 (java11 and java17) managed runtimes.
     // See https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html
-    Annotations.of(this).addWarningV2('@aws-cdk/aws-lambda:snapStartRequirePublish', 'SnapStart only support published Lambda versions. Ignore if function already have published versions');
+    Annotations.of(this).addWarningV2('@aws-cdk/aws-lambda:snapStartRequirePublish', 'SnapStart only supports published Lambda versions. Ignore if function already has published versions.');
 
     if (!props.runtime.supportsSnapStart) {
       throw new ValidationError(`SnapStart currently not supported by runtime ${props.runtime.name}`, this);