Replace em dashes with hyphens across docs and comments

src/routes/printers.ts

@@ -29,7 +29,7 @@ export const printerRoutes = new Elysia({ prefix: "/printers" })
       set.status = 201;
       return printer;
     },
-    // Derived from `printers` via drizzle-typebox — see src/db/validators.ts.
+    // Derived from `printers` via drizzle-typebox - see src/db/validators.ts.
     // Add or rename a column in the schema and this validator updates itself.
     { body: PrinterInsertSchema },
   );