chore: rewrite uses of cs.tvl.fyi to code.tvl.fyi

I've checked the new links manually.

- //web/tvl: changed the target path of links to the tvix docs since
  they were moved in r/2378.

- //users/aspen/resume: Tvix is no longer //third_party/nix.

Change-Id: I419bae1a46bdccc7baa7327215aa2368ffc0f01c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/13043
Reviewed-by: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: fogti <fogti+devel@ytrizja.de>
Reviewed-by: tazjin <tazjin@tvl.su>

users/aspen/web/index.org

@@ -7,7 +7,7 @@ my name is aspen smith and i'm a software engineer and musician.
 * code
 
 - [[https://github.com/glittershark/][github]]
-- [[https://cs.tvl.fyi/depot/-/tree/users/aspen][my directory in the tvl monorepo]]
+- [[https://code.tvl.fyi/tree/users/aspen][my directory in the tvl monorepo]]
 
 * work
 
@@ -24,9 +24,9 @@ that's wire-compatible with postgresql and mysql, based on [[https://github.com/
 - [[https://tvix.dev/][tvix]], a project to reimplement nix in rust with a focus on better performance,
   maintainability, and extensibility. i'm a committer to the project, and mostly
   focus on the implementation of the language evaluator.
-- [[https://cs.tvl.fyi/depot/-/tree/users/aspen/achilles][achilles]], a compiler for (what I plan to become) a dependently typed,
+- [[https://code.tvl.fyi/tree/users/aspen/achilles][achilles]], a compiler for (what I plan to become) a dependently typed,
   low-level functional programming language targeting LLVM
-- [[https://cs.tvl.fyi/depot/-/tree/users/aspen/xanthous][xanthous]], a terminal roguelike in haskell that I work on intermittently and
+- [[https://code.tvl.fyi/tree/users/aspen/xanthous][xanthous]], a terminal roguelike in haskell that I work on intermittently and
   exclusively for fun
 
 * music