[gnome-calculator] Use example instead of value for variable name (fixes #154)

[Robert Roth <robertroth src gnome org>]

commit 542794a5eee7bceb60fcbdde847043e78d08f31c
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Jun 4 12:25:21 2020 +0300

    Use example instead of value for variable name (fixes #154)

 help/C/variables.page | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/help/C/variables.page b/help/C/variables.page
index 9fdf71a1..fa88608f 100644
--- a/help/C/variables.page
+++ b/help/C/variables.page
@@ -17,7 +17,7 @@
     x=5
     </p>
     <p>
-    value=82
+    example=82
     </p>
     </example>
     <p>