Update WG meeting time

Author: wesbland

MPI_Next_main_page.md

@@ -63,7 +63,7 @@ The following working groups are currently participating in future MPI efforts.
 *   Lead: Tony Skjellum and Tim Uhl
 *   Scope: Ensure MPI has robust support for present and future language expressions and to introduce new language interfaces encapsulating the MPI concepts, currently focusing on modern C++.
 *   Note, this group will collaborate with the Fortran working group whenever helpful to advancing MPI.
-*   Meeting Schedule: Wednesdays at <a href="https://time.is/0900_in_CT">9am</a> US Central Time
+*   Meeting Schedule: Thursdays at <a href="https://time.is/1000_in_CT">10am</a> US Central Time
 
 #### [Remote Memory Access](https://github.com/mpiwg-rma/rma-issues/wiki/RMA-Working-Group-Wiki)