feat: Adjust API rate limit docs (supabase#40079)

Author: lforst

apps/docs/docs/ref/api/api.mdx

@@ -23,7 +23,7 @@ All API requests must be authenticated and made over HTTPS.
 
 ## Rate limits
 
-The rate limit for Management API is 60 requests per one minute per user, and applies cumulatively across all requests made with your personal access tokens.
+The rate limit for Management API is 120 requests per one minute per user, and applies cumulatively across all requests made with your personal access tokens.
 
 If you exceed this limit, all Management API calls for the next minute will be blocked, resulting in a HTTP 429 response.
 

apps/docs/docs/ref/api/introduction.mdx

@@ -40,7 +40,7 @@ hideTitle: true
 
       ## Rate limits
 
-      The rate limit for Management API is 60 requests per one minute per user, and applies cumulatively across all requests made with your personal access tokens.
+      The rate limit for Management API is 120 requests per one minute per user, and applies cumulatively across all requests made with your personal access tokens.
 
       If you exceed this limit, all Management API calls for the next minute will be blocked, resulting in a HTTP 429 response.