Update numbers.json (#719)

Confusing description for endpoint

Author: ajrice6713

site/specs-temp/numbers.json

@@ -6326,7 +6326,7 @@
         "tags": [
           "/accounts"
         ],
-        "description": "<p>Request portability information on a set of TNs. SiteId and SipPeerId are optional values. If SiteId and SipPeerId are not specified, the default location will be used.</p>",
+        "description": "<p>Request portability information on a set of TNs. SipPeerId is an optional value. If SipPeerId is not specified, the id of the default Sip-Peer for the provided SiteId will be used.</p>",
         "operationId": "CreateRequestImportTnChecker",
         "summary": "Check Tns portability",
         "parameters": [