Provide examples for az containerapp secret set with special chars.

### Type of issue

Missing information

### Reference command name

az containerapp secret set

### Feedback

The examples for `az containerapp secret set` only provide a trivial example.

How do we handle secret-values containing an ';' or ':' or ' ' (space) or '"' (double quote) or ''' (single quote) or any other special characters that might break the command or parameter list? For one value and for multiple values.

Same holds for `az containerapp update --set-env-vars` and `replace vars`.

### Page URL

https://learn.microsoft.com/nl-nl/cli/azure/containerapp/secret?view=azure-cli-latest&source=docs#az-containerapp-secret-set

### Content source URL

https://github.com/MicrosoftDocs/azure-docs-cli/blob/main/docs-ref-autogen/Latest-version/latest/containerapp/secret.yml

### Author

@mikefrobbins

### Document Id

dc8c1147-dd84-6ef3-2744-63853b1a1d20