Convert format specifiers like `%ld` to Swift native string formatting

Description

Example (see attached ReaderViewController.swift):

converts to:

... but should be:

Review other format specifiers from
https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html
that could be converted to Swift native string formatting (without any loss of information).

Environment

None

Assignee

Alex Petuschak

Reporter

Alex Petuschak

Labels

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Git Branch Name

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GitHub Issue

None

Components

Fix versions

Priority

Low
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