sig-providers Update README.md

added date for September 2024 meeting

Signed-off-by: Drinkwater <[email protected]>

sig-providers/README.md

@@ -35,7 +35,7 @@ Provider SIG covers everything pertinent to Providers on Akash Network. This inc
 | #18| June 26, 2024 08:00  AM PT (Pacific Time) | [Link](https://github.com/akash-network/community/blob/main/sig-providers/meetings/018-2024-06-26.md) |[Link](https://github.com/akash-network/community/blob/main/sig-providers/meetings/018-2024-06-26.md#transcript)  |Coming Soon
 | #19| July 24, 2024 08:00  AM PT (Pacific Time) | [Link](https://github.com/akash-network/community/blob/main/sig-providers/meetings/019-2024-07-24.md) | [Link](https://github.com/akash-network/community/blob/main/sig-providers/meetings/019-2024-07-24.md#transcript) |[Link](https://aa2i7ytftmtlehngryvt4m6jnaxvu5ku72e34u5akdetalzdimja.arweave.net/ADSP4mWbJrIdpo4rPjPJaC9adVT-ib5ToFDJMC8jQxI) 
 | #20| August 21, 2024 08:00  AM PT (Pacific Time) | [Link](https://github.com/akash-network/community/blob/main/sig-providers/meetings/020-2024-08-21.md) | [Link](https://github.com/akash-network/community/blob/main/sig-providers/meetings/020-2024-08-21.md#transcript) |[Link](https://eyppjrj4mhnx5sbrndju5rgjpdcmejx3c76cn4d7isytmkhceq7q.arweave.net/Jh70xTxh237IMWjTTsTJeMTCJvsX_Cbwf0SxNijiJD8) 
-| #21| September, 2024 08:00  AM PT (Pacific Time) |  | |
+| #21| September 25th, 2024 08:00  AM PT (Pacific Time) |  | |
 | #22| October 2024 08:00  AM PT (Pacific Time) |  | |
 | #23| November, 2024 08:00  AM PT (Pacific Time) |  | |
 | #24| December, 2024 08:00  AM PT (Pacific Time) |  | |