Add September 2025 presentation link to README

Author: michaelficarra

README.md

@@ -9,6 +9,7 @@ A TC39 proposal to consume an iterator as either overlapping or non-overlapping
 
 ## presentations to committee
 
+* [September 2025](https://docs.google.com/presentation/d/12QAd-b2rPY5OC82ZwPCcDfGgzSfeSwdbcEoctUqQGss)
 * [July 2025](https://docs.google.com/presentation/d/17qDtY-2Qawt7SeKoY7Rezea-A_hAuwhx2QHJ9MCZ7as)
 * [May 2025](https://docs.google.com/presentation/d/1Mse7PDM0vcMg4Ag_SK1_OGwVwrJuVxKz-qaWj2RyX8o)
 * [October 2024](https://docs.google.com/presentation/d/1V2pFMn0s6UIdrjbfaBlfdu9XE4v3u6qD2gBwLRycVr8)