docs(API): update usename (#1057)

as-is : picocolors
to-be : picocolors-size-benchmark

Changed name since picocolors use API call only when size benchmark. 

Thanks!

related : alexeyraspopov/picocolors#76

---------

Co-authored-by: Steven <[email protected]>

Author: Henry-Hong

API.md

@@ -13,7 +13,7 @@ Current websites using this API:
 - https://npm.taobao.org
 - https://bestofjs.org
 - https://socket.dev
-- picocolors
+- [picocolors-size-benchmark](https://github.com/alexeyraspopov/picocolors/pull/76)
 
 ## Endpoints