[flang] Update Google Doc link for Flang Biweekly Sync call notes

[AlexisPerry]

Summary

Notes from the Flang Biweekly Sync calls have been merged into the same document as the notes from the Flang Technical calls. This patch updates the link in the GettingInvolved document to point to the new location.

[jdoerfert]

LG, FWIW, you can commit these right away.

flang/docs/GettingInvolved.md

 
 ## Calls
 
 ### Flang Community Biweekly Call
 
 -   General updates on the Flang Project, both LLVM Flang and current Flang.
 -   Join [Flang Community Biweekly Call](https://lanl-us.webex.com/lanl-us/j.php?MTID=mdce13c9bd55202e8071d8128fb953614)
 -   Time: On Wednesdays 8:30 Pacific Time, on the weeks alternating with regular Flang Community Technical Biweekly Call.
--   Meeting minutes are available in this [Google Doc](https://docs.google.com/document/d/10T-S2J3GrahpG4Ooif93NSTz2zBW0MQc_RlwHi0-afY/edit?usp=sharing).
-    If you can not access the Google Doc, please send an email to Alexis Perry-Holby at [e-mail] requesting to be added to the access list.
+-   Meeting minutes are available in this [Google Doc](https://docs.google.com/document/d/1Z2U5UAtJ-Dag5wlMaLaW1KRmNgENNAYynJqLW2j2AZQ/edit).
 -   Minutes from older meetings were posted on the [Flang forum](https://discourse.llvm.org/c/subprojects/flang). Search for `Flang Biweekly Sync - Notes`.
 
 ### Flang Community Technical Biweekly Call
 
 -   Technical topics call.
 -   Join [Flang Community Technical Biweekly Call](https://bluejeans.com/284530575)
 -   Time: On Mondays 8:30 Pacific Time, on the weeks alternating with regular Flang Community Biweekly Call.
 -   The agenda is in this [Google Doc](https://docs.google.com/document/d/1Z2U5UAtJ-Dag5wlMaLaW1KRmNgENNAYynJqLW2j2AZQ/).