docs: Remove localhost from ref in cast-numerics.mdx (#9946) — thanks @63r6o!

the links on this doc page were broken, they were pointing to localhost:3000

Author: 63r6o

docs/pages/product/apis-integrations/recipes/cast-numerics.mdx

@@ -152,5 +152,5 @@ you work with "safe integers".
 [link-js-numbers]: https://www.w3schools.com/js/js_numbers.asp
 [link-mdn-max-safe-integer]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
 
-[ref-cube-core]: http://localhost:3000/product/apis-integrations/javascript-sdk/reference/cubejs-client-core
-[ref-cube-core-cast-numerics]: http://localhost:3000/product/apis-integrations/javascript-sdk/reference/cubejs-client-core#loadmethodoptions
+[ref-cube-core]: /product/apis-integrations/javascript-sdk/reference/cubejs-client-core
+[ref-cube-core-cast-numerics]: /product/apis-integrations/javascript-sdk/reference/cubejs-client-core#loadmethodoptions