MAINTAINERS: Update Joel's email address

Update MAINTAINERS file to reflect changes to Joel's email address for
upstream work.

Reviewed-by: Paul E. McKenney <[email protected]>
Signed-off-by: Joel Fernandes <[email protected]>

Author: Joel Fernandes

MAINTAINERS

@@ -1682,7 +1682,7 @@ M:	Greg Kroah-Hartman <[email protected]>
 M:	Arve Hjønnevåg <[email protected]>
 M:	Todd Kjos <[email protected]>
 M:	Martijn Coenen <[email protected]>
-M:	Joel Fernandes <[email protected]>
+M:	Joel Fernandes <[email protected]>
 M:	Christian Brauner <[email protected]>
 M:	Carlos Llamas <[email protected]>
 M:	Suren Baghdasaryan <[email protected]>
@@ -13705,7 +13705,7 @@ M:	Luc Maranget <[email protected]>
 M:	"Paul E. McKenney" <[email protected]>
 R:	Akira Yokosawa <[email protected]>
 R:	Daniel Lustig <[email protected]>
-R:	Joel Fernandes <[email protected]>
+R:	Joel Fernandes <[email protected]>
 L:	[email protected]
 L:	[email protected]
 L:	[email protected]
@@ -20291,7 +20291,7 @@ READ-COPY UPDATE (RCU)
 M:	"Paul E. McKenney" <[email protected]>
 M:	Frederic Weisbecker <[email protected]> (kernel/rcu/tree_nocb.h)
 M:	Neeraj Upadhyay <[email protected]> (kernel/rcu/tasks.h)
-M:	Joel Fernandes <[email protected]>
+M:	Joel Fernandes <[email protected]>
 M:	Josh Triplett <[email protected]>
 M:	Boqun Feng <[email protected]>
 M:	Uladzislau Rezki <[email protected]>