[Bugfix] int to Int migration

[GrzegorzBobryk]

Description

Replaced occurrences of int with Int in Kotlin code snippets to align with Kotlin's type system, which uses non-primitive types. The previous examples contained errors due to the use of int, which does not exist in Kotlin. This change ensures the code is syntactically correct and consistent with Kotlin's type conventions.

Checklist

Before submitting the PR, please check following (checks which are not relevant may be ignored):

• Commit message are well written. In addition to a short title, the commit message also explain why a change is made.
• At least one commit message contains a reference Closes #<xxx> or Fixes #<xxx> (replace<xxx> with issue number)
• Tests are added
• KtLint format has been applied on source code itself and violations are fixed
• PR title is short and clear (it is used as description in the release changelog)
• PR description added (background information)

Documentation is updated. See difference between snapshot and release documentation

• Snapshot documentation in case documentation is to be released together with a code change
• Release documentation in case documentation is related to a released version of ktlint and has to be published as soon as the change is merged to master

[paul-dingemans]

Tnx for fixing