docs: Avoid "run...runId" duplicate phrasing in resumption docs

Rephrase the from_resumption_token docstring so the reconstructed
tracker is associated with the "original tracker's runId" rather than
the "original AI run's runId" -- "run's runId" reads as a duplicate.

Author: jsonbailey

packages/sdk/server-ai/src/ldai/tracker.py

@@ -168,7 +168,7 @@ def from_resumption_token(cls, token: str, ld_client: LDClient, context: Context
 
         This is used for cross-process scenarios such as deferred feedback,
         where a different service needs to associate tracking events with the
-        original AI run's ``runId``.
+        original tracker's ``runId``.
 
         :param token: A URL-safe Base64-encoded resumption token obtained from
             :attr:`resumption_token`.