fix: remove runtime export of type-only RateLimitStorage from ratelimit.cjs (#616)

* Initial plan

* fix: remove runtime export of TypeScript-only RateLimitStorage interface from ratelimit.cjs

Co-authored-by: twlite <46562212+twlite@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: twlite <46562212+twlite@users.noreply.github.com>

Author: Copilot

apps/website/docs/guide/06-community-plugins.mdx

@@ -37,4 +37,4 @@ this list, and future pull requests.
 
 - [Documentation](#)
 - [GitHub repository](#)
-- [npm package](#)
+- [npm package](#)

packages/commandkit/ratelimit.cjs

@@ -18,7 +18,6 @@ module.exports = {
   getRemainingRequests,
   getResetTime,
   resetRateLimit,
-  RateLimitStorage,
   DEFAULT_MAX_REQUESTS,
   DEFAULT_TIMEOUT,
   MemoryRateLimitStorage,