docs: fix grammar in CloudTalk provider guide

Author: sajanjswl

src/provider-guides/cloudtalk.mdx

@@ -19,7 +19,7 @@ This connector supports:
 
 ### Supported Object
 
-The CloudTalk connector supports writing to and reading from the following object:
+The CloudTalk connector supports writing to and reading from the following objects:
 
 - [Activity](https://developers.cloudtalk.io/reference/activity) (`activity`)
 - [Agent](https://developers.cloudtalk.io/reference/agents) (`agents`)