Updated from Slack docs, 2025/02/07

Author: Slack API Ref Buildbot

methods/chat/chat.postMessage.json

@@ -7,7 +7,7 @@
     "channel": {
       "required": true,
       "example": "C1234567890",
-      "desc": "An encoded ID that represents a channel, private group, or IM channel to send the message to. See below for more details.",
+      "desc": "An encoded ID or channel name that represents a channel, private group, or IM channel to send the message to. See below for more details.",
       "type": "channel"
     },
     "attachments": {