[ty] List rules in alphabetical order in the reference docs (#22097)

## Summary

Fixes https://github.com/astral-sh/ty/issues/1885.

It wasn't obvious to me that there was a deliberate order to the way
these rules were listed in our reference docs -- it looked like it was
_nearly_ alphabetical, but not quite. I think it's simpler if we just
list them in alphabetical order.

## Test Plan

The output from running `cargo dev generate-all` (committed as part of
this PR) looks correct!

crates/ruff_dev/src/generate_ty_rules.rs

@@ -63,12 +63,7 @@ fn generate_markdown() -> String {
     let _ = writeln!(&mut output, "# Rules\n");
 
     let mut lints: Vec<_> = registry.lints().iter().collect();
-    lints.sort_by(|a, b| {
-        a.default_level()
-            .cmp(&b.default_level())
-            .reverse()
-            .then_with(|| a.name().cmp(&b.name()))
-    });
+    lints.sort_by_key(|a| a.name());
 
     for lint in lints {
         let _ = writeln!(&mut output, "## `{rule_name}`\n", rule_name = lint.name());