all: fix spelling mistakes

Signed-off-by: nicksherron <nsherron90@gmail.com>

wgengine/router/ifconfig_windows.go

@@ -257,7 +257,7 @@ func configureInterface(cfg *Config, tun *tun.NativeTun) (retErr error) {
 		return fmt.Errorf("getting interface: %w", err)
 	}
 
-	// Send non-nil return errors to retErrc, to interupt our background
+	// Send non-nil return errors to retErrc, to interrupt our background
 	// setPrivateNetwork goroutine.
 	retErrc := make(chan error, 1)
 	defer func() {

wgengine/router/router_linux.go

@@ -192,7 +192,7 @@ func newUserspaceRouterAdvanced(logf logger.Logf, tunname string, linkMon *monit
 // set a timer to restore our rules, in case they were deleted. The timer lets
 // us do one fixup in response to a batch of rule deletes. It also lets us
 // delay arbitrarily to prevent a high-speed fight over the rule between
-// competiting processes. (Although empirically, systemd doesn't fight us
+// competing processes. (Although empirically, systemd doesn't fight us
 // like that... yet.)
 //
 // Note that we don't care about the table number. We don't strictly even care