[sysprof] fix typo

[Christian Hergert <chergert src gnome org>]

commit b56cd733084e5b5411581f76b32f8392e9014d2e
Author: Christian Hergert <chergert redhat com>
Date:   Thu Dec 12 12:39:28 2019 -0800

    fix typo
    
    Fixes #20

 src/libsysprof-ui/sysprof-visualizer-group-header.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/libsysprof-ui/sysprof-visualizer-group-header.c 
b/src/libsysprof-ui/sysprof-visualizer-group-header.c
index 9fc1a43..11d5fd4 100644
--- a/src/libsysprof-ui/sysprof-visualizer-group-header.c
+++ b/src/libsysprof-ui/sysprof-visualizer-group-header.c
@@ -138,7 +138,7 @@ _sysprof_visualizer_group_header_add_row (SysprofVisualizerGroupHeader *self,
                              "direction", GTK_ARROW_RIGHT,
                              "halign", GTK_ALIGN_CENTER,
                              "menu-model", menu,
-                             "tooltip-text", _("Display supplimental graphs"),
+                             "tooltip-text", _("Display supplemental graphs"),
                              "use-popover", FALSE,
                              "valign", GTK_ALIGN_CENTER,
                              "visible", TRUE,