fix path for credentials global search

Author: Mariano Martin

docs/api-reference/v4/endpoints/credentials-global-search.mdx

@@ -1,6 +1,6 @@
 ---
 title: "Search Credentials"
-api: "POST https://api.flare.io/firework/v4/credentials/_search"
+api: "POST https://api.flare.io/firework/v4/credentials/global/_search"
 ---
 
 import CrendentialEndpointsNote from '/snippets/credentials/astp-and-global-search-note.mdx';