fix: use correct value for "MSpan Structures Obtained" #4742 (#5706)

Signed-off-by: Julian Tölle <julian.toelle97@gmail.com>

templates/admin/dashboard.tmpl

@@ -100,7 +100,7 @@
 				<dt>{{.i18n.Tr "admin.dashboard.mspan_structures_usage"}}</dt>
 				<dd>{{.SysStatus.MSpanInuse}}</dd>
 				<dt>{{.i18n.Tr "admin.dashboard.mspan_structures_obtained"}}</dt>
-				<dd>{{.SysStatus.HeapSys}}</dd>
+				<dd>{{.SysStatus.MSpanSys}}</dd>
 				<dt>{{.i18n.Tr "admin.dashboard.mcache_structures_usage"}}</dt>
 				<dd>{{.SysStatus.MCacheInuse}}</dd>
 				<dt>{{.i18n.Tr "admin.dashboard.mcache_structures_obtained"}}</dt>